Things I liked: It has a great look to it and has lots of power. I sent mine off to Mac1airguns and had the o'rings and valve's modded for a tighter seal. It now shoots up to 1050ft/sec and at the full power setting with only 2500 lbs. it will shoot multiple times thru a 2x6 at 20ft. Its also not as loud now as the seals are tighter. It could easily take out a mountain lion if the need arose. It really works GOOD!
Things I would have changed: The rear sight on my gun is too tight, and was difficult to adjust. I actually had to remove the screws and lightly tap with the plastic end of a screwdriver to loosen it up enough to adjust. The cheek peice is alittle high, but is not enough to affect the ability to sight on a target.
What others should know: The single shot side of the shuttle will need to be drilled out to size if you intend to shoot multiple pellet sizes without changing the pellet sizer each time. Pyramyd Air will redrill it for you at no charge, if you send in just the shuttle, or the whole gun. This also applies to the .25cal. career II. Its a manufacturers defect.