Out of your list, I would look to the TB, they can be hopped up pretty well and the CVT tranny will allow you to put put around. They are a full sized quad also. The 300EX might be a good buy depending on condition. If it is older you should be able to pick that puppy up for next to nothing. However, I also believe the quads you need to be looking at are the 400EX, Z400/clones. I know you can find decent 400EX's around well within your price range. For what it is worth, I am 5'9" and 200lbs. You wouldn't catch me on a Blaster if I had anything to say about it, they are pretty small.

 

Just rethinking what ReconRanger wrote. Good God man, if you can find a brand new 400EX OTD for $4000.00, go buy it and forget about the extra $$.

 

Think a 400ex or a warrior/raptor350 would be good choices and be happy for a long time with what your wanting it for. Think the z400/kfx400 wouldnt be as good for some of the things you want it for but will give you a faster sportier quad to mod out. i got my warrior in good shape for $2500 a year ago and its a very solid machine never had any problems other than a dead battery. Stock it didnt like to putt around in first gear but when added pipe , filter, open air box and regetted it putts in first good now. Some people dont like how they sit but its the most comfortable quad ive ever rode so think just depends on your body and how you fit on it. Your not going to win many races on a warrior but its a great trail bike and very dependable.