I'm a Wilson fan in for the 45, but have had great results with McCormiks as well.
Fast forward to 1911 in 9. All my mags insert, function, & eject as needed. But a Willson is smoother all the way around. If I were in the market for a high number of mags, I might think about the cost savings with lesser brands. But otherwise, at just a few bucks more I'll go with Wilsons.
Can't speak for Tripp, but I've heard good things about them from folks I trust & that shoot a lot.
