I would also like to know how heavy of a user some of you are and how many apps you have on your devices? Its one thing to say you don't have any issues, but all you do is text, call, and occasionally browse the internet, you probably wont have a lot of issues.
I do use my mobile devices pretty often but it's generally limited to (in no particular order):
Most common:
Facebook App
Carmageddon (game)
iBook (eBook reader; reading Snow Crash now

)
Reading mail from 6 accounts
Web browser with Rocksmith score tracking forum, this forum, ubisoft (for Rocksmith), wunderground, and Amazon
Music playing
Texting (mostly Jeanne but others from time to time)
Moderately often:
GoodReader (PDF reader, game material mostly)
Kindle (occasional eBook reader)
MapMyRide when on the bicycle (twice a day during nicer weather)
ShopShop (shopping list manager but only on Saturdays before going shopping)
Less often:
Politico (generally during elections)
Doom
Duke 3d
Risk
iElectribe
Evernote
SplashID (password manager, from time to time)
Unnamable (era based random name generator, during games mostly)
iElectribe, Carmageddon, and the Web Browser are the apps that crash on start or when loading a particularly busy web site (mostly with animated gifs or videos).
Carl