Mastercam......50% Cimatron.........85% Unigraphics.....100%
UG is still my favorite, but Cimatron is catching up fast! Just added a spaceball, now it's exactly like moving around in UG.
It's super easy to leave different amounts on faces. I was able to do it on UG using check surfaces, but I could only change one value for all check surfs. Cimatron lets you select a surf and give it an offset value, then select another and give it a value.