I originally bought enough CMC triggers to outfit a number of my rifles. They were well built triggers, pull weight was light and the trigger itself seemed crisp to my tier 5 fingers. These are enclosed units, so I couldn't examine anything inside the housing, but they seemed well enough made. These comments apply only to their single stage.
I also picked up a larue MBT which is obviously not a drop in, enclosed unit. Each piece looks well made, comes with two weight springs, and comes with the backing of a company that some here love, and some hate. It appears, regardless of ones feelings, Mark Larue stands behind his products. I personally absolutely love all the larue products I've bought. With MBT's being so reasonably priced, and such high quality, all my CMC's have been sold (for more than the price of a new MBT) and replaced with larue products