I'm in the Honda camp too.. We've got a '96 400 Foreman that's been bulletproof for work and hunting. No odometer on it, but 14 years (8 of them with me) and I haven't replaced anything but tires and one battery. Carb has been fine on mine.
I'd like to have selectable 4wd, full time 4wd is hard on the shoulders around the woods. Warn makes a conversion kit, Two to Four I think it's called?
The Foreman family is simple and light weight, mine is about 550 pounds. I'd avoid the electronic shift version, they've been known to have problems. Nothing that can't be fixed, but irritating.
Brakes are the weak point with the Hondas, the rears especially can fill with water and freeze. Their philosophy of keeping water out is flawed, I'd sooner have it able to get in and out easily. Most utility ATV's don't really need a lot of brakes to begin with. A gear transmission in low gear and a closed throttle is almost equivalent to having the brakes on anyway.
They don't have a comfortable suspension by any stretch of the imagination, particularly the 400. I was looking for a 450 when the 400 came along, it was close enough to what I wanted and a smoking good deal. Independent rear suspension would be nice, better traction and handling over rough ground. It comes at a cost though, CV joints and price.
They don't have a true locking front diff, something to consider if you plan on getting buried in mud.
With those flaws considered, I'd buy another one tomorrow if I needed to replace it.
Chilly