depends on what you plan to do, if your just mucking around then what ever you can aford, make sure it has real brakes not drum's.
if your going to ride clubman at your local club then spend the $$$ on a 250 gas gas or beta. 200cc if your a light weight. Maybe a late 90's beta techno or a gas gas jtx250, you will find yourself spending money on a worn out bike if you go too cheap.
id go with what most of they guys in your local area have, that way you will find parts easy.
Gas gas trials bike parts are way cheaper than the moto x bike parts! so dont let that put you off.
its Crazy Big Al but if your have lesbian fantasies you can read it crazy bi gal if you like!
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