Thanks for the heads up.
I had a look at those, the one I fancy is discontinued. The short nosed one with the 43mm ring mount.
However, they appear to feature a 6mm collet, which will not do me at all. All my bits are either 1/4" or 1/8", and I have a right few!!

I'll stick with my B&Q 1020W £25 wonder for now.... until I can reproduce what Jeremy did with DC brushless motors and so on.

John