The main advantage of the Samsung is the thin and light form factor, and in that regard, the 8.9 sounds like a better choice when it becomes available, with the same or better capabilities and screen resolution in a slightly smaller package, weighing less than 1 lb.
For my part, I decided to order a Lenovo ThinkPad Tablet (32GB). It is certainly bigger and heavier than the Samsung 10.1, but it includes a full sized USB 2.0 port that supports input devices, flash drives and external hard disks, a full sized SD card slot for memory expansion, and a digitizer pen that works across applications, in addition to HDMI and the usual micro USB. A folio case with a full ThinkPad keyboard is available for $100, although I did not order that at this time.
Lenovo has also substantially added to the stock Android interface, with a customizable fast app launcher, file manager (for attached storage, including through the USB port) and expanded settings. They also include some additional software like a full version of Documents to Go.
One thing that gives me comfort is that, like all other Think brand hardware, a full hardware maintenance manual can be downloaded from the Lenovo support site. I'm one of those people who likes to know I can take something apart and put it back together, even if I may never actually need to do so.
I expect it to arrive next week and will give my impressions after I get to play with it for a while.
