Well, both are accurate if they're in the right hands. Try them both and see which you shoot the best. The Cocker is harder to shoot at the rate that you would get out of an electro, but isn't really lacking at anything if you ask me. Simply shooting fast can actually become a bad habit: you might become more prone to sticking out more, lazy with accuracy, shoot yourself out of paint too quickly, and draw unwanted attention to yourself at inopportune times. Quite a lot of people caught on to that a couple of years ago and switched from Angels back to Cockers and got themselves into better standing in those aspects. That leads to the chicken or egg question: is the gun more accurate or did I shoot it more accurately? The attention went to trigger settings to match the player--a good focus which brings into thought what the person is actually doing when he fires the gun. Grip, hold, and balance dictate how well your mental picture of where you want the paint to be will be put into effect.
So, that in mind, pick both up with tank and hopper on, practice some target and snap shooting and see where your paint goes. How well that works will answer your question.