had a good friend of mine who is in the military as an operator, and we were shooting his custom .45 1911, ( I won't mention the very presitgious custom maker)against my glock 21, and he couldn't believe a glock out of the box would shoot equal to his $2500 custom piece.. His comments were" its ugly, its half plastic.. but you can't argue with the grouping on the paper.. they are good to go.
The standard Glocks fit me great. I have a 23 and a 35. I dont know what the model is but my dad has a Glock .45 that is a single stack. It is much slimmer and might be a good choice for ccw if you dont like the fat grips.