I have two LumiZones (LZ) on my Excals and a Hawke MAP on my compound. Really appreciate the ability to match aim point spacing with the trajectory of the arrow that LZ gives me. However, I like the smaller size of the MAP for the particular compound bow it's on. Both have very good optics, particularly considering the price. I don't see a need for an adjustable objective at typical crossbow (hunting) distances. Perhaps it's helpful for competitive target shooting, which I don't do. If LZ were made, with current features, in the same size as a MAP, now THAT would be some CB scope.
I also have the lume zone and like it very much. BUT as cossack said, have the same features and the same size as the MAP. I would have one in an instant. That would be one nice scope!!!! I am sure Excalibur will come out with something new. They don't sit on their butts and let things pass them by.