Whether to get a 8GB or 32GB ipod touch?

Okay, i am wondering that which ipod touch i should get, 8 or 32gb? 8gb can save up to RM250 and is quite an amount for a student like me. Until now i still having dilemma, should i really use the hard-earned money to buy ipod touch, so i hope you guys can suggest some useful and good ideas. =)