I love to ride. Pretty big into it.
What you left out is what style of riding you will be doing and terain?
Hondas are very reliable, They do not have a locker for the front axle. Great trail/farm machines. very nimble. Not a very good choice for mud. They build a good manual. For a automatic I would look at other brands for auto.
Artic Cat builds some good machines. For the most part there kinda big for there size and have good ground clearance. There great for slow hardcore riding. Not the best for trails.
Polaris is heavy and has reliabilty issues, has one of the best 4wd systems though. real plush ride and they have a nice weight balance.
The grizz fom yamaha is nice. has a front locker. As far as automatics go the yamaha's as well as few other companys use a wet clutch primary, The belts on these last forever even with abuse. Others like the polaris and my brute don't have a wet clutch and you burn up a belt easy a clutch kit does help though. A irs machine will give more ground clearance than a sra machine. If you do slow riding, tow, are ride two up getting a water cooled machine is important.
I'm more into deep woods and mud. Although my brute can hold its own against most sport atv's in a 200' drag.
I have a 600 grizz and a brute force 750. The brute is built for mud with 29.5" outlaw tires (nobody will ride behind me,these tires can sling some stuff), lift kit. wheel spacers, clutch kit, hmf pipe, snorkles, winch, custom tie rods, dynatek igintion, have gorillia axles on order. The grizz is a bit milder with 28" outlaws and edls with snorkles and winch. Pictures of riding and machines in my photbucket
quintonhall - Photobucket - Video and Image Hosting
Have you looked at highlifter forums? Its one of they best sites for utility atv's. There is a lot of machines on there for sale also. If your looking to buy used, Look for a machine that has the mods done to it for what you want as you will get the mods for free or at least cheap. Used atvs with extra's will sell for the same price as stock machines.