there is a video of a guy shooting a homemade air gun on xtremespearfishing.com that looks insane! REALLY powerful. it would seem , from a tech. point of view, that air has better potential.than bands. In U.S., EVERYONE uses bands. in the dive shops around florida that I have seen dont really carry pneumatics. Maybe 1 or 2 models as compared to 15 or 20 band guns. the ones they DO have,(usually MARES, CRESSI)are short (2 to 3 ft) never the bigger more high tech models. Why is that? I would think that, worldwide, the US has a high % of spearos.? Maybe not. who knows? i shot a 3ft cressi at a garbage can in the dive shop where my friend works: it bounced off and hit me in the leg. Unimpressive. My buddy has a cayman hf 110(i think) and that gun shoots really smoothly. how does the pneu. rate, side by side? that would seem to be the perfect test. two identical guns in everyway, except, one with bands, one with air. maybe one of you crazy Euro spearos will make it to my humble island and we can do the test in the pool,(i got a perfect , huge pool)(not "mine") or maybe we could get a hogfish to sit still long enough. I got an idea: you could send me one, and i will test it out for the summer and get back to you? any takers?