I would defiantly go with the Kahles if I already had it. If not I like the Swarovski z3
Have you had personal experience with the Z3? I was strongly considering getting one but researching them, I found numerous complaints of them loosing zero.
Yes sir I had a 4-12 z3 with the BT. It tracked right and never zerod it but one time. I did dial it quit a bit before selling it to get the z5. Only reason I sold it was to get the 5-25. I did like the reticle in the z3 better as it was heavier.
As to the comparison to the leaupold, I have never looked through a leaupold that was close to a Swarovski. Maybe just my eyes but the Swarovski is way above the leaupold.