an E36 is deff a good choice
are u planning on modding the car anytime in the future? if so u may want to look at 95 or older since it has the obd1 ECU system wich was easyer to boost using a chip. as far as problems go the only major one i can think of with the E36 off the top of my head is that the ECU is prone to frying if u go through an auto carwash. ummm..... i think there is a semi comon problem with rear subframe going to hell if u really spank your car..... other then that tho just understand that BMW's in general can be expensive if u dont maintain them and or dont do work yourself. sorry for the rambling format its quarter of 12 and im a little drunk lol but that is most of what i can think of off the top of my head! i hope it helps man and welcome to UB.C we have a great community here.