I own guns from many manufacturers, to numerous to mention. I like them all, but have had to send back 6 to the manufacturer (4 Sig P320's, & 2 Ruger Mark IV's) for warranty work. I called each company, and both were helpful. I called Glock on stovepipe issues on my Glock G19 that I thought was recoil spring related, and they were helpful. (I even dealt with Yankee Hill Machine, who I've been told is difficult to deal with, but my experience was good). I had a potential Issue with my S&W M&P 15-22 bolt face, but requested the gauge tool through their website and checked it myself (it was OK, so no further action taken). As far as the Scorpions, I own 2, The EVO3 S1 pistol and the EVO3 S2 Micro pistol with brace I have red dots on each, and they both were accurate, and easy to fire etc. The EVO3 S1 didn't have a brace when I shot it (held it up towards my cheek to fire), but I've since installed a brace. The Micro, with brace shouldered, also fired fine. I guess it's just the preference of the different operators, but I've yet had any problems with them.