Having had the best part of a week to "play" I am overall pleased with the phone. For me, I am not going to compare it to the 4S since I had a Galaxy Note in between.
All I can say is, it is extremely fast, very responsive and I have not suffered any of the issues reported over at teh Google, other than, the battery life is not very good. Indeed, worse than the 4S in comparison and indeed worse than the Galaxy Note, which was not great.
Still a lovely bit of kit though, I will see how I get on with battery life and may take it back to Apple to take a look/swap out if necessary.
Looking forward to a compatible docking charger next, have already ordered a case.
How does one make the phone "vibrate" tunes?