Blair wrote:

Thanks for your help. I am only fixing curtain rails and blinds so the
EasiDrive would probably be adequate.

Your choice, of course. Me, once I'm making up a Screwfix order, I
figure (a) buying a box of 100 from a semi-trade supplier like them is
so much cheaper than buying a plastic-pack of 10 from a shed that I may
as well at least consider a notch up in quality; (b) if I'm going to
have a large (to me) quantity of them lying around for the next 2-5
years, I may as well have the grade that'll let me do more jobs.

But as I say, I don't think there's that much in it!

Cheers, Stefek