I had a choice between the Glock 21 and Glock 19 when my department went to issuing Glocks. I like the .45, but I'm not a big man with big hands and I just did not care for the big blocky grip of the G21. The G19 was easier to manage and I do shoot it well.
Those who beat their swords into plowshares usually end up plowing for those who didn't. Ben Franklin