Only problem with using 3rd party tablets (unless Toshiba) is that classview will not work. This is because it requires root access to the system partition, and the only ways to do this are:
Root the tablet
Install Learnpad in system partition
Or a custom install image
We're currently trying to get it work on a Fujitsu M532 tablet and we're working on a solution to the classview issue. Tried the standard learnpad tablets and do not go for them, go with Toshiba or another well known brand. The cheap tablets overheated, had a poor wireless connection and were very slow.
Learnpad is by far the best management tool for using android devices in education though, very promising!