I have a 3" 64, great gun, like a tank, shoots great, BUT, I have a 2.5" 19 thats just as easy to carry and has alot better sights.
Personally I would like to have a 3" 19 or black kote 66, with a ramp front nightsight,bobbed hammer, smooth radiused trigger. No porting/no comp. Plan to get one made someday. 19 with a shortened 3" model 14 underlug barrel . Pinned front night sight. Like the very short run of LH model 19's that were magnaported. Bob