Tablet or...?

I am an owner of a Note 2...and just wondering is it even worth considering getting a tablet? Or would I be better off with a device such as the Ipod Touch 5th Gen? Or is the Note 2 suffice to cover all my needs ( I am a very mobile person) I have been looking into devices such as Surface, Nex 7 with connectivity.., and the Ipod touch..but I don't even know if I need it with the phone that I have...any advice?