Hey, I just ordered my ipod mini not to long ago but am having second thoughts. I am wondering if i should get the 20GB 4G in place of the mini. Key info: music collection: 2.16GB its been that way for a while needed for: road trips, working out, jogging, etc. I don't plan on doing any recording or any thing, i just want a player with a good amount of space. What do you think ?