[jyl]

I would get an Android 3.0 or an iOS device. Android 2.2 will be obsolete for tablets in months if not already - risk is that future apps are optimized for larger screen and 3.0, not smaller screen and 2.2. Blackberry is not cheap and very limited app store. Windows 7 is possible, I find it a good O/S but maybe more horsepower and less battery life than you need.

Or, get a $250 netbook and swap in a SSD and more RAM.