I'm currently using a stock S3, and have also used a Note since I had a 4S.

One of my main annoyances is app switching. Having to hold down the home button just to bring up a menu of recently used apps isn't helpful imo.

I have Taskbar Switcher which puts a list of open apps into the pulldown shade (sorry not sure what it's called on android), and the best option I've sfound so far

The way I had it setup with iPhone was to only have open apps (not recently used apps) in the app switcher tray, and to use ZEPHYR to bring up this tray with a simple swipe up motion/gesture from bottom of the screen

If anyone has any suggestions on how to improve my app switching experience my ears are open, thanks!