PB Swiss are the best I've used. Not cheap but great service from toollady.com
My employer bought 10 set of them 2 years ago......serious money, but the best I've used. I use them all day, everyday, from 0.050" up to 1/2", and 1.5 mm up to 10mm setting up spring coiling and forming machines.
Did I mention PB Swiss is the best I've used?