I have a Grohe unit that has been holding up well. Not sure which company is older, but they are (I think) related.
Delta R10000 rough-in valve supports three different cartridges/trim types: standard single handle pressure balanced, two handle with volume and temp, and a thermostatically controlled valve. How it works depends on which trim/cartridge set you buy for it. The bigger plumbing supply stores sell them separately...the big box stores usually package the rough-in and a trim set in one box (limiting your choices). The R10000 valve body can be purchased with or without stops.
On any (that I know of) shower valves, if you follow the manufacturers guidelines for the size of the hole in the wall, you can service that valve. It would be a strange valve that could be replaced in its entirety without making the hole larger. For that, they make a remodel plate to cover the larger hole.