This one is excellent.
in ios5 apple decided to remove the multitouch gestures from the ipad1.
they are still there, just turned off in a setting that you cant get to :(
multitouch gestures make the ipad much better to use.
display mirroring means that I can use it to play games on my tv (and to watch the bbc iplayer too) though it isnt airplay mirroring. it is the cabled version.