I have the ipad, wife has the galaxy tab 2 (7inch), my son has the ipad mini.
all have advatages and disadvantages.
The Ipad still has slightly better selection of apps but all have so many that its not really and issue.
The Galaxy tab is easier to carry round and for that reason gets taken out and about more, If you buy stuff through I tunes then ipad is better, as you can download right to the ipad which is convenient.
If you want to put stuff on that you have downloaded or converted elsewhere then the galaxy is better.
I have had some issues with by Galaxy Note connecting so some things via bluetooth that I havent had with the iphone or Ipad.
For me the big killer is the forced upgrade of the Apple software, I didnt upgrade the system software because I particulary wanted to use the older google maps rather than the new apple maps software, eventualy was forced to as some many other apps stopped working unless you upgrade the system software, I was then stuck with the ipad apple maps software which was and still is rubbish in comparison or the phone version of google maps on the pad which works but is not as good for my use as the previous version and being the phone one is a bit legoland in looks. Had one or two other apps which still worked great but because they are no longer in the apps store, I dont have them any more which is a pain (vlc media player for one).
For me personaly I wont by apple stuff again, its way to "locked down" to apple for me. I swaped phone over to note II, my son is finding the same and just swaped his Iphone for a Galaxy 4. I am more than happy with the Android equivilent software, all of the apps I used on the pad/phone are now available for Android and its easier for me to get stuff on and off the device (I dont use ITunes). Also since I had to get new leads etc as the new phone uses a different connecter from the previous version it was a no brainer, so I am gradualy swaping over to Android everything, and much happier with it. From a basic hardware point of view, it all uses the same mico usb connecter, which means less leads to carry round, and all of the devices I have bought have micro SD card slots which makes upping memory, and loading stuff much easier (filmes/music etc).
If you are not already an apple person with time and money invested in their software/apps and hardware, then I would suggest that in the long run you will be happier with a android equivelent.
Having said that if you appreciate the limitations with apple, and are happy with that, its a very polished product, looks nice and works well, although that is because it is locked down so much.
None of them are a desktop/laptop replacement, they are designed and fill a different market slot.