I dont think you will find good gaming tablets but I might have missed one.
I dont like them that much but a friend of mine at school swears by his. He took the time to really learn how to use it well and he has scanned in his text books for easy access to homework problems and notes. Its pretty nice really but I just cant get past writing on plastic all the time. I will stick with paper and pencil for notes but if you are motivated tablets do give some nice advantages.