I wrote up my experience with the Sony tablet S on my blog
here this morning. In short, while it has some nice features, I had problems with the battery and the cheap/plastic-y feel of the device and returned it after just 3 days. I ended up buying the Samsung Galaxy Tab 8.9 instead. While the Sony has more ports/extra features..I love the size & feel of the smaller Galaxy Tab. I think the 8.9 inch screen is the perfect size for me (7 inch a little too small, 10.1 inch a little too big).
Happy to answer questions about the Sony S or the new Galaxy Tab 8.9.