Years ago I comitted to using Elan on 100% of my installs. I have no regret whatsoever on a technical level, but one thing I never considered and I think you should work this into your equation:

Control 4 is the system that homeowners already have a chance of having brand recognition with. I'm constantly trying to educate homeowners that there are other options, which takes time and resources, whereas if I had just chosen Control 4 I'd be ahead of the game.

Just saying, consider brand recognition into the equation. If that's not important to you, then you should consider Elan as well because it's really solid.