Cheaper is almost always the best option in flight training although occasionally something else trumps the money. It's all the same to the DE, whether you flew a Piper or a 152. There's no substantial difference in the training or the aircraft. I did my ppl in a couple of 152s owned by the flying club. Wet rate was $48/hr, plus $20/hr for the instructor. Gas has gone up since 2003, but I am still finding 152s for around $70 wet. $35 is a standard FBO instructor rate.