Am going to make this simple and refrain from saying you should choose this as I think it all depends on what you desire in a device.
I went to my favorite computer store a few months ago to look at their tablets and I was looking at Galaxy and of course the iPad, so my comparison is between these two and may not apply to your decision, but I hope it assists you in deciding what you need.
If you're looking at size, if you're looking for something bigger iPad is the winner, if not an Android Tablet would be something what youre looking for. Of course with Honeycomb, this is going to change.
If you're after camera, at the moment the iPad is not what youre looking for, but if you're looking for something with a longer battery life, then the iPad is a good choice.
If you're like me who is more into apps and apps availability, iPad is a winner as there are more apps available to users, in fact on Android paid apps arent available in every country, so I'd advise you to check online to see if youre country has the benefit of paid apps. A lot of the free apps on Android are practically useless and of poor quality, and I am speaking as the owner of an Android device which I've got for almost 2 years.
If speed is something you're after, I think both are quite good and due to the aggressive market everyone is trying to keep up or create something better. If youre after price well, that's to be determined as there are many android tablets out and a lot are being developed so its hard to say, but the Galaxy was much more affordable.
Now my suggestion. I am more into apps, in fact apps is what I regard as important and as a result I choose the iPad, and am not choosing it becuz I love apple, but I am making this choice as a regular customer. In my opinion, all these devices got a long way to go before I say they are ideal, and none of them is perfect, so from the list, you decide what is right for you, in the end my choice is and will be subjective and may not apply to you.
Regards