I don't doubt this for a second. There's people in here that have capabilities that others don't have, and vice versa. I couldn't do what you do for a living. But your job is far more exciting than most lol
I agree can't go wrong with either one. Something about Colt though, intangible you're right. One thing I've seen on SA moreso than the others, sometimes the fitment of parts and the slide to frame fitment will be off at the back of the gun.