Anyone here use a Intuous

I am considering a new tablet and looking at the intuous 4x6 or 6x8. I use a wdescreen laptop and dual monitors for the most part. Should I invest the widescreeen 6x11 tablet? Doews it really make that much of a diff as far as the aspect ratio goes? I have a old old graphire that I think is on its last leg so I need to replace it.