I have owned several, from one of the best to the worst! I'll go in order... The worst being a semi-auto Hatsan Galation! The trigger was horrible and it failed to cycle more ofter than it did cycle, and sometines it just wouldn't shoot at all! Accuracy was dismal when it shot as all, that one went back to Hatsan for a full refund! Next was the Evanix Air Speed. It cycled fine, whoever would jam horribly if you tried to shoot lighter pellets. Accuracy was also an issue. Power was decent and the trigger wasn't as bad as most of the semi-autos I've owned, but not as good as others. I ended up selling it to a guy who knew much more than I did, but if he ever got it working perfectly or not, I'm not sure. Then there was the AEA Backpacker. It was light, accurate and made good power, but had a really heavy trigger. It also would not cycle above 3200 psi, even though the max fill was much higher. I also felt if it had been regulated to around 2500 psi, it would have been a great semi-auto. It's gone now also. I also had a SAM (Semi-Auto Marauder), it was quirky, had an extremely long trigger pull and didn't really perform up to Marauder standards with accuracy. The power wasn't there either and I never could get it to the advertised level. Otherwise it wasn't a bad semi-auto, but I didn't use it much, so I sold it also. The last two I still have, the LCS SK-19 is very accurate and a beast for power! It will also shoot full-auto, although accuracy suffers quite a bit and you waste a lot of pellets! The trigger is long and about meduim weight, not terrible, but far from the best either. Lastly is the Huben K1, by far the best trigger of the group and very good accuracy and power as well. The LCS and Huben are very similar in they both use a 19 round non-removable magazine, a hammerless system and are easily adjustable for power, using a power wheel that controls the valve. I have not owned or shot a Leshly 2 or Steyr, but understand they are top notch, but also at the top of the heap price wise! Hatsan has also come out with a couple more semi-autos and a full-auto, but based on past experience, I am shying away from any of their current offerings. These are just my layman thoughts based on my own experiences, so I hope they help...
