Deda Superzero, 21mm... the finish is slightly too grey for my liking and it has ugly graphics (although I can kill them with acetone). Otherwise pretty good and on offer at Wiggle atm.
Whisky Parts No 7, 18mm... not easily available, graphics will disappear into the frame.
Condor Supremacy, 15mm... aesthetically this is pretty much what I'm after but it doesn't have quite enough layback. And it irks me that they've written the word 'supremacy' on it. In white, no less.
Current forerunners are, from L-R: