The Black and Decker "Professional" 240v 115mm angle grinder just died

Question is, are the 18v cordless up to snuff?

I'm thinking Bosch as I have other 18v Bosch equipment with which I am happy, with the exception of their 18v vacuum which isn't worth a tinker's curse. Really and truly Bosch should be deeply ashamed to have put their name on such a piece of rubbish.

Anyway are the 18v cordless angle grinders any good? I only use an angle grinder very occasionally.