It depends on how old or advanced a rider you are. I would say the 300ex or the 400ex if you're advanced and/or older. Has anyone heard of mcguirepowersports.com? They sell cheap newer atv's, mainly Honda and I was wondering if they're reputable?

 

Probably any quad over 400cc would be a good quad for you...Z400, KFX400, 400EX, Raptor,etc. A Banshee has loads of power for hillclimbs and going wide open through fields, but isn't that great for tight trail riding.