You programme the scope with the round you're using and it ranges automatically and adjusts the red dot sight you aim dead on. It works and he took many a deer with it. 4-12 zoom if I remember right but new ones may be bigger zoom. Decent glass but not as good as the swaro 8x50 that was on it
I got mine through Crockarts in Blairgowrie for £1299 inc VAT. I think it is well worth the money but haven't actually used it stalking yet and can't compare it with the 2. I have used a separate range finder before and found I often didn't have time to use it e.g. when the beast is moving away. You then guess at the range and holdover - this should take the guesswork out of it. The only thing I would say it is lacking is a remote button for ranging - you have to take a hand off the rifle to press the button near the front of the scope which is not ideal.