I've used other low end mechanical markers. Spyder, piranha, and brass eagle.
spyder sonix pro, stock
like everyone else... new barrel for starters, maybe a better hopper
Light, pro grip, cheap, a spyder which means there's plenty of upgrades to choose
Composite trigger could be fragile in some isolated cases, stock barrel, the hopper rides high
I have worked with many similar markers. My friends and I play small time woods ball mainly. I am not overly serious about getting good but I still have an intense love for the game so for me this marker is great. I would advise for this gun only as a starter gun since it is rather cheap if you have aspirations of getting really good. I play against similar Spyder, and Piranhas and easily hold my own. I've even been known to whoop up on them from time to time. The stock barrel is louder than crap and can curve balls in intense firefights. This may also be a bad bore size fit between the barrel and paint... not sure. I originally was against the 90 degree PRO grip instead of the 45 grip on most guns but I learned that it complements the way most players hold their guns up higher when poised to fire. The one attribute I have not been able to get over is how high the hopper rides when the supplied elbow is attached. I've found a way to rig the hopper directly to the gun but usually don't for fear of losing my hopper in the middle of a game.
Don't be stupid and buy an Angel, or Bob Long right off the bat if you are just beginning. If you are just in it for the recreation, or would like to learn a little more about paint balling before taking the next step buy this gun. If you have already been playing for some time and are looking to expand and have enough dough to shell out I would recommend a Tippman or perhaps a higher up Spyder. I personally am really happy with this marker.