I ended up ordering the MR920. It should be in soon. I'm excited. It's the flattest shooting on the market today. I've gotten to shoot a couple more and here's what I like about it:
It's a Glock 19 with upgrades. It comes with interchangable backstraps, not small, medium and large, but three different hold angles. One is the Glock angle, one is the 1911, and the other, as I understand, is more like the S&W. It has a pronounced ledge to push down with the support thumb which is helpful when rapid firing.
The red dot options are unique in the market. I haven't gotten into red dot shooting, but at age 70, I may find it attractive soon. The red dot will co-witness witht he sights. There's a lot more to it that I like, but, until I own it and shoot it a bit, I'll hold my opinion.
I hear great things about the company, however I'm a bit disappointed about the customer service so far.