I'm required to wear steel-toes at work, but I get a $175 allowance every year so I try a lot of different boots. My feet are not super wide, but wider than average so I'm sure that plays a part in my opinion of fitment.
Every wolverine I've had has been horrible. I know there are others that may be better, but I'm not willing to throw any more money at them. They were really comfortable at first, but apparently that was because they were not built with any real support designed in - just a lot of padding and insulation. The one good thing - they never leaked. Even when the soles literally fell off.
I didn't like the fit of my Caterpillars. Other people I worked with liked them, but I wasn't happy with the fit. The toe box itself was fine, but they were really narrow right around the ball of my foot. They seemed to hold up well, but the soles were really hard and didn't have much cushion.
Red Wing - meh. A guy that worked for me for a while swore by them, but I never found a pair I liked. Just personal preference - I'm sure they're fine if you find one that fits your needs. It seemed like they lacked much selection of traction-oriented soles which I need.
Carolinas - took a while to break in, but they were probably the only boot I've ever liked enough to endure the occasional blisters while I was breaking them in. I still really like them, but they weren't waterproof so I don't wear them much. They literally felt like a custom tailored Wesco or White's at a fraction of the price.
Georgia - My current 'go to' boot. I got the 8340 (I think?) Gore-tex 8" steel-toe. IMO, you cannot go wrong with this boot. Fit is great, right out of the box, and still fits great after years of hard abuse. The leather is pretty soft, so it's important to spend the $10 and get some glue-on plastic toe caps. No leaks, no blisters, great traction, great support. Should be around $200.
My newest pair are Danner Radical GTX's. Most Danner steel toes have a really weird last and I don't like the fit of the toe box. Some people like the Quarry, but they just don't fit my feet. Anyway, the Radical is my low-top summer boot. They took a little breaking in since they were pretty stiff new, but I really like them and have no complaints about the fit. They're comfortable enough to stand in all day without aches.
YMMV,
Eric