Looking for a keyboard case for Sprint tab

[tekkguy]

Does anyone with a Sprint 7" tab have a good keyboard case? I'm looking at Amazon at several cases, but some of them say they don't work with Sprint tabs.

I'm stock, rooted ... I would definitely consider a different ROM if it might solve any compatibility problems with a BT keyboard case, because I'm using the tab a lot for class work as a laptop replacement.

Thanks!