I would also take a DC motor. Personally, this was the right decision for me, as I needed to have speed control and output range, while the AC motor was a little more powerful, but it was less responsive. I think this is one of the main differences between these motors and everyone will choose what will be more profitable for him. I also had a bad experience with AC motors as the only model that I have constantly failed for various reasons. Often this was due to electronics failure. I had to buy quality parts here
https://www.automation-usa.com/ and make substitutions since what I had then was very unreliable.