buying a jetta

I'm looking into buying a 1994 - 1996 jetta.i have 1 question. what's the difference between the gls, gl and Trek. i know that the only difference between the gl and gls is power windows and stuff like that. but what does the trek have that's different? also i someone told me that the gls isn't very reliable, lots of electrical problems and i would be better off with the gl. is this true? thanks in advance for any help

It has the same electrical problems of any other car... some people just dont have good luck. The Trek eh... dunno. Engine displacement? Badges?