Well let me put it to you this way then

If you dont mind disk swapping and are in fact LOOKING for disk swapping, all the RPGs of the era kick fucking ass on the C64.

The sort of drab VIC-II palette actually complements most of the games.

so really if you are looking to get into the C64 and like being in front of one, fire up:

Legacy of the ancients
Legend of Blacksilver
Ultima V
Demons Winter
any of the bards tales
Wasteland
Curse of the Azure Bonds


also a non-rpg which is great on the C64 is Myth.

If you play the above mentioned RPGs and do not enjoy yourself, theres no hope then.

(PS: Of the above mentioned ones my favorites are Ultima V, Curse, Wasteland and LofAncients)