As to durability, I have talked to numerous savvy folks in the airgun world and have heard NO complaints. Every person I talked to seems very impressed with this rifle. I have recently learned that it is now available in my favorite caliber, .22. My loaner now has 1200 pellets thru it without a single problem. If anything, it is even smoother shooting than before.
All head shots, all instant kills.
It doesn't get much better than this. I found that the trigger pull adjustment was slightly on the heavy side on the SM-1000 and could not be adjusted to the lightness of the RWS Model 48. Beyond 10 meters, I find the Beeman Crowmagnum .177 are the most consistent. Cleaning with standard air rifle bore solvent and brass wire brush every 50 shots or so will markedly keep this air rifle consistent and produce target quality accuracy for matches even against firearms up to 25 yards. I have installed a rail and stop on the forend of the stock, and have cleaned out the competition at my local gun club.