Titser Marco,
Try both with your favorite guitar and then decide for yourself. If you can test both in a band setting, it would be better. I have heard the 4501 but maybe the Peavey Classic 30 has its own unique thing going for it which you may or may not like. If you had more money, go for both, paramababad ka talang sa dalawang amps and later on sell the one you least liked.