Asus Eee Pad Transformer vs Toshiba Thrive?

All,

I have a chance to get one of these two for the holidays:

-Toshiba Thrive 10.1"
-Asus EeePad Transformer 10.1"

I'm torn - the price (to me) is the same ($0) and the capacity is the same in the models I'd be looking at. Each has positives and negatives as I see it. The Asus is thinner, a bit quicker (though they have the same specs - it "feels" a bit quicker) and according to reviews better battery life. The Toshiba has a full size USB slot (for flash drives and hard drives) and a full size HDMI out - so no adapter needed - it also recharges fully faster.

The big difference to me, and thing that prevents me from picking the faster Asus, is that the battery on the Asus is not end-user replaceable, whereas the Toshiba is. I plan to use this tablet every day so battery wear could be a big factor. I haven't had a tablet before - but in my experience cell phones and laptops start dying faster after a year or so - perhaps the Toshiba is the choice then since I can just buy a new battery and swap them?

What would you do given this choice? (And it's only those two - no "get an iPad" )

Thanks!!

I should also note that (because I have a personal netbook and laptop and a work laptop) I wouldn't be purchasing the transformer "dock" that allows it to become a netbook.

So I don't see that as an advantage.