First off, can all of you people who recommend the iPad give some legitimate reasons as to why as opposed to fanboi Android-bashing or total misinformation? Thank you!
Okay, now that I have that off my chest, I must say that Apple makes some pretty decent hardware and they make it pretty idiot-proof as well. However, that “idiot-proofing” is also their downfall. You are tied into Apple for life, and you may as well get a Mac to go with it since the Windows version of iTunes is a kludge and don’t even try hooking up to a Linux box unless you like pain.
Android has more free apps available, more freedom, more customization, and basically has all of the things Apple lacks, but it is a little more complicated for the non-tech-savvy people (translation = “most Americans”) to figure out. However, if you already have Android smartphones, you know all this.
You will want something that has access to an established, trustworthy market instead of its own weird thing, and at the moment that really does limit your options; the Galaxy Tab and the Xoom are the only two Android tablets currently sold that meet that criteria while iPads have their own App Store.
There are some great Android tablets coming soon, and one (the Notion Ink Adam”:http://www.notionink.com/index.php) that is off to a rocky start but shows promise as it evolves, but when the dust settles, I have to hold my nose and agree with @MyNewtBoobs on this one; the iPad is the overall best tablet out there right now. There are others that beat it here or there, but as an entire package, the iPad wins.
Or, if you are into a little hacking, you could root a “Nook Color”: and get yourself a not-bad 7” Android tablet :D (Yes, it can boot Froyo from an SD card!)