Mike said:

Used both. They're very good.

Ditto! And fun too.

I think the only
reason they mention an old drill is so you can ... save the faff of putting it in and out of your regular drill
- but it certainly doesn't make a mess of the drill.

Yes, I agree.

I bought mine on the rec. of someone in *this* group: good advice.

Also: it means it's worth investing in good brushes, because you can
easily get 'em very clean. Cheap brushes are the perfect illustration
of the old Italian proverb: "Good things cost less than bad ones."

John