I tried the blue bezel SBDC063/SPB079 in James Porter when I was in Glasgow last month. I was very impressed and found it to wear a lot smaller than the specified 44mm width.
I'm not sure what they're like for giving you any discount on the RRP (I didn't ask) but that was was my only reservation - I thought that £799.99 was a bit steep.
If they become available for under £500 new in the future I'd definitely have one.