The fact is a lot of paintball players are underweight crybabies and have never fired a real gun so they think their etek kicks like a freaking Garand. Maybe its because I weigh 260 pounds or maybe its because I shoot a lot of real guns but I honestly don't think that any marker other than the spring blowbacks like tips and spyders have any kick at all. Most modern electros kick about 1/2 to 2/3 as much as a 22 magnum. Tippmanns kick about as much as a 22 magnum, which is almost nothing. It is possible to make air guns with no recoil by using clever venting and stuff like that but it really isn't necessary. I swear I am going to throat chop the next person I catch whining about the shot quality on his gun.
Also, anyone here who has access to a shooting range, go rent a 9mm or a 40 and shoot 100 rounds through that. Even better is if you can find a 308 or 12 gauge. I promise you will never even notice your markers recoil ever again.
When you are using laning with psp with your gun it is nice to be able to put down a consistent stream of paint. Also people spend $1000+ on their markers so you should expect nice shot "quality"