whats better +EV, 6max or 10max?

I used to play 6max almost exclusivly because i liked the more regular action. But the last 3 months i have almost exclusivly 10 handed games because thats the only option to play in the casino and that part of my game that was the weakest. But now my 6max game is a lil rusty, but they are proabably about even. What has better EV overall? Does 10 handed have it for multitabling?