So, I have a sticky handbrake return spring on the nearside rear, and a sticky caliper on the offside rear to the point the offside disk is knackered. Do I a) strip calipers and rebuild new oem calipers and disks c) upgrade depending on cost? Also, will new oem stop mooing or is it upgraded items that will 100% get rid of that?

Cheers!

That smiley face should be not the face....

new calipers - trw do make a ready painted green one if you want the oem look

Do new oem calipers still moo or will they have sorted that out?

I replaced both my rear calipers with TRW green ones, they don't come with the modified spring to stop the noise when in reverse. Luckily, touch wood, I've only had the noise once.