It really depends on what you want to use it for. If you want it to sync your life, if your life is on a mac it's easier. I.E. if you use ical, safari, icloud, itunes...everything will be simple for you. It's also a little easier to use, especially if you already have an ios product. the Android has a learning curve. It's small, but it exists. However the ipad has very limited functionality. One major thing is that besides applications and updates generally costing money (and apple isn't cheap to begin with!) the kinds are limited because apple has to screen EVERYTHING.
Android tablets offer much more freedom. Most applications are cheaper than on the ipad, or you can find the same exact thing for free. Android is open source so anyone can release an app so long as it passes googles virus and quality check. The interface is completely customizable and os updates are done automatically and free.
One really nice thing about some android tablets is they have usb and sd ports. iPad's dont have either. This means you can NEVER expand the memory. If you buy a 16 gb ipad you have to live with it. An android tablet however will allow you to buy the 16 gb ipad, then for an extra $100 add a 32 gb sd card for expanded memory and even another 2 tb external hard drive if you want! This is a big deal if you plan to use the tablet to watch movies which you'll probably want to do since its essentially a portable tv.
Another media outlet of course is iTunes, which android tablets dont have. But they do have Google Music. It is googles new music store and app. The beautiful thing about it is all your music is stored in the cloud, and even available off it! This means that when you buy a new song on your android tablet, it instantly shows up on your computer. No plugging in your tablet, waiting five minutes and reorganizing your library. It's all done immediately and syncs between all android devices that you own.
Android tablets, because of google docs, also have a basic word, ppt, and excel editor. Pretty neat if you're using it for work or even to update your disney budget as you're on vacation! To get you to disneyworld, android has a fantastic gps system. It's so good it's what Audi now uses in all their cars!
One bad thing about android, if this is going to be a problem, is that there really isn't much customer service. The individual manufacturers (Samsung, acer, etc.) do have cs, but its mostly for hardware problems. If you have software problems you have to go to google's website and look on forums. Since you're on this site to ask this question, I doubt this would be that much of a problem for you, but in the end there is no physical person at the help desk to string you along. (of course if you have some friends that work at google, they can help you or get you in touch with their it guy)
Have fun with whichever one you choose!! And sorry if i was biased.