The user reviews I came across at androidtablets were all good, but most report a lag in the user interface. This could be a honeycomb issue as it seems to afflict Xoom too. Having waited for the Notion Ink, then something else, Xoom ruled itself out due to cost, the Transformer is a good buy but don't want to squander money on a laggy interface.
Next up are Samsung 10inch, Lenovo 10 inch IPS, and a few others I can't remember. There are new dual core chips by Qualcomm, Samsung and Texas instruments in a few months so a lot to wait for.