97 m3 4dr Estoril Blue - $32,995 - Was it an auto or a stick? I'm honestly surprised you thought it was slow if it was a stick. Though sedan usually = auto. Manual sedans are pretty rare. An auto M3 is on par w/ a manual 328. Price is too high. I bought my '98 M3/4 5-speed w/ 35k for $29,500 and that is even on the high end after only 5 months.
2001 325i Silver - $31,000 - Once again, tranny is a huge factor...Regardless...Underpowered/overweight car.
2001 330i Silver - $38,000 - Since you mentioned "D" its probably safe to say its an auto....This one really surprised me...You thought the M3 was slow, but went on about how fast this car was??? Something must be seriously wrong w/ the '97 M3 because I had this exact car as a loaner and it was a DAMN DOG compared to my stock '98 M3/4!! The autos in BMWs are serious slush boxes.
98 Dinan M3 - Price? Tranny? I'd venture to say manual since its a coupe. Probably a decent ride, and I'd bet a $.05 that its way over priced.
With a little more info I could probably be of more help, but its a start...
