I'm looking for a good deal on either a 16 gb or 32 gb touch. Where's the best place to find one? Also, do you guys find the 16 gb one to be sufficient? I'd prefer the 32 gb model but its like $100 more. Is that worth it for double the space? And one more thing, if I buy a pre-update ipod, would I be able to install the new 2008 updates if I jailbreak it? Or do i need to shell out the $20?