I like Glocks, but not the large frame ones. The grips and slides are too wide. Although the 1911 is heavy (in a steel frame version), it makes up for it by being very slender and flat. Part of the problem, IMO, with the G21 is that it was originally made for 10mm Auto, a longer and more powerful cartridge than the .45. It needs the wide grip and slide for the Ten, but a dedicated .45 model could be a lot slimmer.