Husky WR250 is an excellent bike (I'd say go for a 360 myself), but you should look for the usual things, clean airbox, check suspension (OEM is relatively lively), dents in expansion chamber and pipe and most importantly, compression. Huskies should be relatively tight when starting and after 20hrs use, the bike should really have the rings replaced.
One thing l have notices about owning a Euro bike is that if you maintain them well ie stick to the scheduled maintenance timespann, the bike will last forever.
Performance, well lets just say l have a friend who sold his 00KTM300 for a 00WR250, in his words, more tractable motor, better suspension and more agile, plus that word: relability!
Last but not least, the whole WR range is made for enduro riding and not MX tracks - buy a SX if you want that type of thing.
Have fun!
J
J:eek: