Do a search in THIS forum chap...(just to save me re-typing all my Pro Magura-ness again )
In a nutshell (and just in case you can't be arsed to search) :
They are more than good, they stop so hard they will scare you.
They piss over cantis, U brakes and V's.
They look boring but who cares, stopping a bike is 'sensible' stuff
Cheers fella, understand re : filing hole bigger to fit over studs, not sure about the upside down bit though.. what about the brace , will this fit, or will this need to be jiggled with