I haven't spent months using this app yet, but I come from Intellij when working on Java and AppCode has the same wonderfull smell. I won't go on knocking xcode, but you guys did it right.
All I can say is AppCode gives the warm fuzzies when working on objective-c code. Warm fuzzies for me means instant must buy.
Nice job folks and thanks for making objective-c enviroment not suck to work in.