u can get a trx250r cheaper now. they arent as expensive as they used to be. i would get a trx 250 out of all those 3 u named, just because it does out preform them in suspension and everything else.
Uh, suspension is the *only* thing it outperforms them in. Mind you yes, that is a large factor, but the Tecate-4's engine, hands down, is the best.
I had an '87 Tecate-4, an '88, and now have a '89 TRX250R and my '96 Banshee. The Tecates were really fast and fun but the handling wasn't all that great. My $.02, if you're looking for a 250, get the TRX250R. If you want more power out of it, just get it built.
The LT..hehe. They're fine too.. but my last choice..