Maybe new barrel, the stock one is pretty good though
Packaging - The 06 Ego comes in really nice packaging, sturdy foam that is covered by a metal slider thing. I use it for storing my gun.
Looks - This thing looks sweet. it looks better in real life than it does in pictures.
Eyes - The eyes are awesome i have never chopped a ball.
Fast - This thing RIPS once you get the trigger adjusted how you like it. i can hit 15 - 20 bps no bounce pretty easily.
Trigger - One of the biggest strong points of this gun. Its an optical trigger, so it works by breaking a beam instead of clicking a switch, which makes the trigger pull a lot smoother. it also has 4 allen screws that can be turned without taking the gun apart, which adjust magnetic return strength, spring return strength, pre-pull stop, and post-pull stop.
Training mode - This is really cool, you put the board into training mode, and when you fire, the ram half cycles so that it doesnt open the main valve, so the ram just goes back and forth and you dont use hardly any air. this is helpful for learning to walk the trigger faster.
Barrel - The stock barrel is an PE Shaft barrel so it shoots pretty well, even with monster balls.
Board - the board is a weakness and strength because it is easy to use, but the max ramping rof is 15bps. it would be cool to have uncapped ramping. it also doesnt have full auto, which would be useful for testing hoppers and stuff like that.
Feedneck - the feedneck isnt like most feednecks, it clamps on instead of screwing into the gun. its also the lever-lock thing which holds the hopper really tight but is still easy to take off.
Kick - the kick is really not that bad it barely moves when you shoot, but its more than some other high end guns since its high pressure.
Loud - its a little on the loud side, but who cares people are going to hear the gun anyway it might as well be loud and scary >=]
Price - its a little more than most people want to spend on a paintball gun, but its worth every one of the 100,000 pennies that you are going to fork over for it.
Overall, this is the best gun i have ever owned, and i wont be upgrading any time in the next few years.
i recommend this gun to anyone that can afford it.