On Tue, 28 Apr 2015 10:54:41 +0100, Bert Coules wrote:

I need an angle grinder for very occasional use, initially to trim some
slates. Any recommendations? Screwfix have a basic-looking Energer
model for an amazing £17.49, with a Bosch at £34.99 and an Hitachi at
just under the £50 mark (the only one of these which comes with a disc).

No-brainer, the Bosch.

Don't let "comes with a disc" swing anything - they're a consumable that
really doesn't last very long at all. Get a pack of the right ones for
what you're cutting/grinding, and be willing to swap 'em when they start
to show they're "going off". Or, of course, when they turn into a handy
shirt button.