[citation][nom]Freakykiwi[/nom]The key difference between the S3 and the Note, other than the size, is the stylus.[/citation]
and most likely more than just AT&T as the carrier. while the large screen is not for everone, one thing that the note is extremely good for is point of sale for mobile businesses. I have no desire to go back to AT&T, ill get the unlocked if I need one unless its on verizon.
As far as note vs s3, basically it looks like samsung is following motorola with the dual design idea per product line (droid + droid X)
As for upgrading, there is usually no reason to upgrade each new product, but if you have say the lg Ally ... you haven't upgraded yet?