Before the unfortunate boating accident that took all my scary rifles I had a Colt. It was sold with no regrets in the 90's and I never looked back. I built a few rigs on PSA components, both lowers and uppers and only had one upper that was complete garbage. Really don't know why one would even consider between the two, there are numerous companies that make much better components than either of those. My last experience with that bad PSA upper and lack of customer service has forced me to stop sending any of my green their way.