Darn it, the replacement black one from Amazon started chipping off paint at the start of last week so I contacted Amazon, more in hope than anything else as it was more than 30 days since purchase. Not a problem they said and two days later a brand new one arrived before I'd even sent the faulty one back. Amazing. Better service than from flippin' HTC whom I'd emailed abou the paint coming off at the same time only to get some obviously automated email back from "Kevin" the HTC robot.
So, I'm going to sell the black one on eBay and get a sim-free grey one online in the next few days, I looked at the Galaxy S3 in CPW but it's just too big...