I just got back from a pretty tough Aoudad hunt yesterday where we were testing the BDX system (2400 RF, 4.5-14 BDX scope). I plan to get a review of it done in the next weeks, but we put it on there two days before we left and went. Had it on my son's rifle. Long and short, it worked perfectly, allowed him to get off a 571 yard shot on a ram and then it quickly updated the hold for a 200 yard shot.
Glass wise, it's their Sierra 3 glass, so not their best. Nonetheless, in a very brief comparison we made to his VX3i, they seemed about the same. This was not a real test with charts etc, as we were in a hurry. I'll do that later. We just wanted to make sure it's low light and sharpness were going to be sufficient for the trip, and it was.
Overall, our experience was good. Did not dial at all, but sighting in was super quick and easy, but can't say anything about the tracking.
BDX system worked very well, but you need to have the devices fairly close...as in within probably 5 yards or so, for it to work 100%. Again, not really tested it down to see just how far you can seperate them, but suffice it to say, if you are within a yard or two, you are definitely good to go. Overall, so far, I am pretty impressed, which, originally, I kinda was blah on the whole scope/RF integration deal, but since using the system together, changed my mind.