I just returned my Xoom for the Galaxy tab. Here is my basic run down.
The screen screen is so much better it isn't even a fair competition. I didn't really appreciate how bad the Xoom screen was until playing with the Galaxy tab. However, the thing that sold me on the tab was it was just smoother. One of the things about the Xoom that bothered me was that in any orientation besides the standard landscape layout caused all sorts of graphical issues. I had read that this was a problem with the tegra 2 chip, so I didn't worry about it. This bug doesn't seem to be present in the galaxy tab, which leads me to believe that the Xoom has some deep down flaws. I also haven't had a stock browser crash yet, which I had frequently on the Xoom (even after the 3.1 update).
It is unfortunate that Samsung decided not to include more ports on the tab and an sd card would have been nice. However, I keep so much data in the cloud that I really don't have much need for an sd card, but that is just me. I plan to get the USB connector at some point, but I plan to use Bluetooth peripherals.
When I look at the Xoom and the Galaxy tab, the Xoom has so many downsides. I really hate saying that, but it is the truth in my eyes. Actually while writing this response, it feels like the tab has a more responsive screen as well. I would highly recommend the switch, but it all comes down to preference.
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