Well, I had a Xoom before, and a Galaxy Tab. Today I have only the iPad 2 32 gb.
Well, I like iPad because of it stability, even being a old version, it runs GTA San Andreas perfectly, and every game I put into it.
And this year we will have iOS 8 (newer update).
I preffer iPad over the others because I have an integrity with my other Apple devices, such as a Mac, and an iPhone (which I already sold).
I have my iPad since December 2011, and it still amazes me.
Even I not being to carefull with it, have minor scratches, but you actually cant see properly (just if you see a movie pretty close, for example). The size of iPad 2 for me is perfect, it is about 9", and I have finished GTA Vice City and GTA San Andreas on it, without even using a joystick or something.
I'm currently at 7.1.1 with Jailbreak, with some OS costumizations, if you wanna some screenshots, just pm me.
iPad is AWESOME, specially if you are buying a iPad Air, which is newer than mine, that works everything!
If you are worried about bluetooth stuff, compatibility, and all, stay calm, because I have no troubles at all, and if I need some OS modifications, I use Cydia [jailbreak] (which I can change pretty much everything from system, from themes to dashboard changes)
I had iOS 6 for about since it came out (sep 2012), and then, last month I go to 7.1.1, which a team released jailbreak.
In the mean time at iOS 6, it was perfect, no lag at all. I formatted and upgraded because my space was about to end (I had more than 100 applications, 1.000 pictures).
Well, I would choose an iPad. Like I always say: I preffer androids for smartphones, but for tablets I would never go to an android.
Remind guys, this is my opinion only, if you dont agree with something or all of that, feel free to reply.