Nomak,
FWIW, I went the oposite way. Off duty I carried an Officers Model in stainless. Other thatn the really crappy design flaw with the recoil spring retaining cap it was a nice piece. It shot very well for me but was freaking HEAVY and only held 7 rounds. A second mag was also heavy. After I saw the smaller Glock's and had a chance to compare them side by side with the Colt, it was another easy choice. The Glock was lighter full up with 16 rds than the Colt was empty. It also was vitually the same size length, height and thickness. It shot so well for me that I changed to the same weapon for on and off duty. I also used it and my duty rig for combat competition against the "race guns" and "competition holsters". I held my own just fine on speed of draw using a heavy tight thumb break holster. The enclosed mag pouches weren't any real help though.

After we had a couple protracted shootouts the Dept. decide to allow the semi auto's for duty. When I saw the first Glock I thought it was the ugliest darn thing I had ever seen in a hand gun. Until I shot it. I wasn't an adherant to the 9mm at all but given the departmental mandate on caliber it was an easy choice. I went from a Model 66 4" loaded with .38+p silvertips (Dept ammo ONLY allowed on duty) to a Glock with Black Talons. Yep the EVIL

bullet. Still Dept. issued ammo until the bleeding hearts B****ed about it and got it changed to CCI Gold Dots. I had more rounds in one mag than I had on my person total with the revolver. I had a total of 51 rounds with all mags.
For me the Glock shot very well, accurate and reliable including with my reloads. LIke any other PERSONAL choice, it's not for everyone. The .45 also shot well and I never felt that I was handicapped by either guns accuracy, just the 45's weight and low ammo count.