I’m in the process of switching over to GHL after using Apex for several years. Not quiet at the point that I can tell if I have a strong preference one way or another. GHL has a leg up on build quality. Apex appears to be easier to program but that might just be my familiarity with it. GHL isn’t that hard though. I’m hoping to get my KH Director se up this weekend.theres still a small voice inside of me saying go with ghl or tronic idk