welcome Clydesdale
buying yourself an ATV is definitely a good idea ^_^
there anything specific you're interested in? what kind of riding are you planning on doing?
I just picked up a used 2005 Honda Rancher 400cc 4x4 AT last year, its been amazing to me. I'd recommend it to anyone looking for an entry level machine, very comfortable size, super reliable and has been able to keep up with the big boys through everything I've encountered so far, even though its pretty low for its class.
Everyone seems to have their favourite brand but far as ATV's go Illl never want anything but another Honda