I think that you will like the NPM
I got one of the last SG NPM in December. I already have an original Winchester and wanted a shooter. I chose NPM based on Ruth's opinion that they made the best carbine. If you read in War Baby, the NPM carbines did NOT freeze up in the rain test. None of the other manufacturers could say this. They actually wanted to investigate why the NPMs passed the test and nobody else did, but it was dropped. I suspect NPM metallurgy was better, maybe smoother finishing?
I sure like the finish of my NPM. Mine has original barrel (IBM Corp), trigger housing and FP. Rockola Hammer, QHW recoil plate, the rest Inland. It came on a Type 1 I cut Inland stock. Have fun shooting that baby.