Enigma
Yes, I bought one for my son as his first marker. The very small diameter main spring will give out, slowly lowering your velocity. Despite being a spyder clone you cannot directly replace the spring because of the small diameter hole in the striker. Solution? Replace the striker with one from a Spyder... but be careful, the strikers are not identical. I put in an aftermarket spring, stock spyder striker and buffer, bored out the velocity adjuster assembly to accomodate the larger spring and voila... it works, so far with plenty of velocity and hopefully more reliability.
The stock barrel was actually quite good with medium large paint, and suprisingly quiet. Aftermarket Spyder/Pirhana trigger frames do fit... I put an E-LCD trigger frame on it (bought it for $20 in disrepair and fixed it) and have been quite happy. It now belongs to my daughter, but I wouldn't hesitate to use it if my Bushy ever goes to marker heaven.