I Used to Believe Bigger Was Better. Now I Know Better.
When I took over purchasing for our company in 2020, my first instinct was to consolidate everything with as few vendors as possible. It just made sense on paper—fewer relationships to manage, bigger discounts, simpler invoicing. I was proud when I cut us down from 12 vendors to 4 'one-stop shops' in my first year.
That pride lasted about 18 months.
What I mean is that the idea of a 'one-stop shop' is seductive. You imagine one phone call, one PO, one delivery. The reality? It's usually one vendor who excels at one thing and is 'good enough' at the rest. And 'good enough' in lighting, specifically, cost us about $3,400 in rework and emergency orders in 2022. That's the year I stopped believing a generalist could do it all.
My Mistake: Assuming All Expertise Is Transferable
The biggest vendor failure that changed my thinking wasn't a dramatic missed deadline. It was a lighting order for a new break room. We needed something that looked decent—a mid-range fixture. The generalist we used for office supplies and furniture said they could handle it. They sent us a catalog page for a 'commercial-grade' LED that looked okay in the thumbnail.
It wasn't okay. The light it produced had a noticeable flicker that gave the facilities manager a headache within an hour. The color rendering was terrible. The whole thing looked cheap.
I didn't fully understand the value of a specialist in lighting until that moment. A company like Dialight, which only does industrial and commercial LED, wouldn't have sent a flickering fixture. Why? Because their entire reputation rests on light quality. A generalist? They sell 500 things. If one is mediocre, they just shrug.
The numbers said going with the generalist would save 12% on the unit cost. My gut said to trust their 'good enough' promise. I went with the numbers. The outcome was a $2,100 cost to replace the fixtures, plus the wasted labor and the annoyed staff. Now I pay a premium for specialists who live and breathe their product category.
The Three Questions I Now Ask Every Vendor (That Reveal Everything)
Here's the thing—a vendor can tell you they're a specialist, but how do you verify it? I've developed a three-question litmus test after five years of managing these relationships. It's not perfect, but it's never steered me wrong.
1. "What's the one order you turned down because it didn't fit your expertise?"
This is my favorite. A generalist will never have a good answer. They'll say, "We can do anything." A real specialist will have a story. When I asked a Dialight distributor this, they said, "We don't do decorative residential chandeliers. Golden chandeliers or colorful chandeliers? Not our lane. We'd send you to a specialist for that. We do industrial, hazardous location, and high-bay."
That answer? It earned my trust for everything else. The vendor who said 'this isn't our strength—here's who does it better' earned my business for all the things that are their strength.
Why does this matter? Because if they're honest about what they don't do, you can trust them more on what they do.
2. "Walk me through the specific specs for this application."
I'm not a lighting engineer. But I've learned enough to know when someone is reading from a spec sheet versus actually knowing their product. Ask a generalist about something specific—like what size wire for an LED light bar in a warehouse—and you'll get a vague answer. "Uh, standard wire?" Ask a specialist, and you'll get: "For a 48-inch LED light bar at 120V, you'd typically want 14 AWG. If it's a long run or a daisy chain, I'd go with 12 AWG to handle the voltage drop. Let me confirm for your exact layout."
That level of detail shows they've thought about the real-world installation, not just the sale.
3. "What's your most common customer error, and how do you prevent it?"
This question separates the process-optimizers from the order-takers. A generalist will say, "Nothing really, our customers are pretty savvy." A specialist will say, "People ordering Dialight light pipes for hazardous locations often forget to specify the exact temperature class they need. We always follow up on that before fulfillment. Saves a huge headache."
That proactive approach speaks to expertise. And frankly, it's why I've shifted my 8-vendor portfolio to include more specialists and fewer generalists.
But Wait—Doesn't That Make Procurement Harder?
I can hear the objection: "Having 8 vendors instead of 4 is more work, not less." You're right. It is. Processing orders across more vendors eats up time. But here's what the spreadsheet doesn't capture: the cost of the second order.
In my experience, the 10% you save on the upfront unit cost from a generalist is almost always eaten up by returns, rework, and delays. The specialist costs more upfront—maybe 12-15% more—but the total cost of ownership is lower. The gear works the first time. It lasts longer. The support is better.
I ran the numbers on our 2024 vendor consolidation project. Across my 8 vendors, the specialists had a 98% first-time-right rate. The generalists? 78%. That difference is worth a ton of headache to me.
My Final Take: Know What You're Buying
Look, I'm not saying fire every generalist tomorrow. They have a place. For office supplies, a generalist is fine. But for something as mission-critical as lighting—where quality affects productivity, safety, and even health—you want someone who thinks about it all day.
I'd rather work with a specialist who knows their limits and tells me honestly when I need to look elsewhere (e.g., for that one-off golden chandelier for the executive lobby) than a generalist who promises the world and delivers a flickering embarrassment.
Know the difference. Your budget, but more importantly, your reputation, depends on it.
Price note: Lighting costs vary wildly. A good commercial LED panel runs $80-150 per unit (based on specialist quotes, early 2025). A generalist might offer a 'comparable' unit for $60. You get what you pay for—and sometimes, what you don't pay for upfront, you pay for later.