I have the Samsung Galaxy Tab 10.1 and I absolutely love it. It was the same price as the iPad, but the Apple version does not have Flash (the Samsung does) so if that is important to you for playing games, watching movies, etc. you may want this one instead. Other than that, they are both very comparable.
My husband has the HP Touchpad - this one is heavier, has 32 gb of storage compared to the 16 gb of mine, and no Flash. This one runs on WebOS instead of Android - so not nearly as many aps, but for under $200, it is really great - so simple to use. I would recommend either.
Bottom line is - no matter which one you choose, you are going to love it.