So, I have mine and am typing on it with little lag (actually the AC Mobile Forums are a little laggy). However, I did have difficulty getting the Tablet to recognize the keypad. The instruction manual says set to Samsung Keypad, but I find the input method that works for me is English (US) Keyboard (Android Keyboard). My only other issue is, even though I can still use the physical the Andriod virtual keypad pops up when I start typing and I have to push a buttonn to hide it. Kind of annoying and I will see if there are any settings I can change to prevent this. But if anyone has any tips, they would be appreciated.
Aside from that, I like it a lot. They have a home key, recent apps key, back key, voice search key, etc. Hooking the Tab into the dock at my local Barnes and Noble got a lot of oohs and ahhs from patrons. Definitely an attention grabber.