Sorry to hear the ASUS Slate didn't work out for you. I don't type fast, so keyboard entry wasn't a deal-breaker for me. I use a lot of templates with only limited text entry. I have been getting the same 3-4 hour battery life as you do, which is disappointing, since you can't swap out the battery.
Something that I didn't mention, which has become an unexpected but very useful feature of the Slate, is that it is an excellent mobile computer outside the office. Anytime I am in a WiFi zone (at the hospital, a meeting, at home), I can use Hamachi to connect to AC on the office network, and also access Updox, and be working like I'm at my desk. It is much more usable than trying to connect using LogMeIn Ignition on my iPad, which was my previous method.
So despite not being the tablet computer I'd hoped for, I decided to keep the ASUS.
