First off, 85% of you need to learn proper grammar and typing skills.
Second, what is your price range for your WHOLE setup? Not just the gun. You want to be able to afford the right equipment to run your Impy properly (an HPA tank and decent hopper, EVO II?)
Third, if you know nothing about paintball I would stick to an Impy, if you have some grasp on how an Cocker works, and the game, I would get a Cocker.
Fourth, do you have a competetive team yet? If not, there's nothing wrong with buying a lower end gun like a E-Spyder, and then getting something better when your game picks up.
I hope I helped.