It's going to come down to personal preference I'd say, if you want a big screen the Note is the way to go otherwise it's the S3. My guess would be coming from a 4s, the S3's 4.8in screen will seem a big enough upgrade as it is without going all the way up to the Note's massive 5.3in screen.
I have had a Note since launch and been surprised at how pleased I've been with the device, the large screen is superb (done away with my tablet as it seems pointless) and I've not had any issues with fitting it in pockets or using it as a phone. The S3 doesn't appeal to me as the Note is quick as it is so the S3 is a downgrade with its smaller screen. But I wouldn't for a second make a general recommendation for the Note, it's really a phone you have to try out yourself as I've never seen such a wide range of reactions to a device - some people cannot believe it's my phone, some are immediately impressed with the screen and curious to find out more and one person has an uncontrollable fit of the giggles each time he sees the phone.
John
Knowledge is power, guard it well
