the SG Best warranty is actually they send it back to UK for you right? And that will take several weeks I believe?
If so, this warranty is actually half a warranty only, cos u only save on the shipping charges to and fro and this prevents you from claiming warranty on minor stuff like maybe a couple of dead pixels cos the time away from the phone isn't worth it.
So is the extra $60 (compared to buying from mobyshop) worth paying for this "half warranty"? If mobyshop gives you the original invoices then you can also send it back to whatever country it came from yourself.