I originally had a leupold RX-IV, and I found it to be unsatisfacory for long-range use.
Now I have a Swarovski Laser Guide, and I think it is fantastic. The optics are the same as a $2000 pair of SLC roof-prism binoculars. I found so many grouse and deer with that glass, that it paid for itself in that regard. The rangefinding is phenomenal, often getting readings over 2000m. I needed something that would go just past 1000, and this has excelled in that regard. I looked into the features of the new leica, and saw that they were using a bunch of canned ballistic curves just like the leupold and bushnell offerings. That turns the extra features into bull#### marketing points. A benefit of the leica is compactness, and having an edge in price. But if I were to choose again, I would pick the swarovski again.