[iPhone]: Sound Format Question

Hey All,
I was just curious if you can tell me what the best sound format(s) is for short audio sounds in an iPhone App. I have a lot of audio editing software so I can change my files to pretty much anything (including Ogg Vorbis). Preferably I'd like some kind of best to worst list like:
caf
wav
ogg
mp3
etc with any notes when applicable. Any other useful knowledge you can think of would be great as well (like only one compressed sound should be playing at a time etc). Thanks.

We've been using WAV over CAF. Couldn't find a way to get MP3s working yet. So I guess the advantage of WAV is that its more universally compatible with wav editors, etc. I think you have to use QTPro to make CAFs (basically an encapsulated AIF)

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