Jailbroken of course. iPhone that is not jailbroken is a waste of money in my opinion. I am never upgrading from iOS 5.1.1 because new maps and YouTube apps are something I dislike.
I will Jailbreak too once a Jailbreak is released. Then I'll need to remember at all those cool tweaks. So let's see.... hmm.. FakeCarrier maybe, then IntelliScreenX, then MewSeek, ... InfiniFolder, .... I had many many more but I don't remember them all.