Wow! thanks for the great responses. You've all given stated great reasons for keeping one or the other and given me more to think about. I didn't know about the Pc-66 ram being replaceable by 100 or 133, that's a big plus! Also i forgot about reading about the slot loaders having problems with the interior plastics deteriorating. I'm thinking the older model is of better build quality as well and more of a collectable, but i'm still on the fence.