Hi Roy...welcome to the club
Galfer (sp?) are a popular mke, and are used by JHP/Ducati Coventry on Stuart Eastons bike. A bit more pricey though...approx £300 I think, but they look the bizz and obviously work a treat.
There has been a little bit of a discussion on here before about those waveys on ebay...they do seem a good price, but you do tend to get what you pay for as with most things. They may be cheap...but probably weigh a ton (not desirable as they are a rotating mass) and are made by who?
I would tend to stick with known brands when dealing with critical areas such as brakes!
