I bought the original Sigma 21 years ago partly because the assault weapons and high capacity ban was about to start, but mainly because of the Sigma's ergonomics. High capacity poly automatics have been in rapid evolution since the Glocks first came out, and the Sigma was an important step in that path. For many people, myself included, the Sigma grip felt better than Glock, but everyone has a personal "feel" preference. For me, the Glock grip was not a significant improvement over a Walther P-38 or a Browning High Power, both extremely "comfortable" pistols. Back in '94 it was hard to find Glocks as police departments were sucking them up and Sigmas were somewhat cheaper because of lower acceptance. Quality level is identical in my view. Isn't it swell that "adjustable" grips and aftermarket add-ons are beginning to proliferate to otherwise un-alterable poly pistols.