Got a Galaxy S2 at the moment and it's done everything I've asked of it but as my contract is up next month is it worth upgrading to something else or is anything else really just not worth the extra and save some cash by going SIM only? The S II has had a charging issue when i really thought it was broken but I managed to factory reset it and it's been Ok since. I have no interest in an iphone 5, so it's probably Galaxy note II or S3, but I'm thinking the note II is really too big which leaves the S3. A worthwhile upgrade?