Invasion, because that doesn't have bases that can give everyone on your/your enemy's team rockets every 45 seconds. I also like the progressive element and the varying objectives. Though, some of the Elite spawns were terribad and there was nothing you could do if the Spartans took your Banshee. Dominion is my favorite gametype in H4, though, but Rockets and Incineration Cannons need to be removed from that playlist. There is literally no way to counter them except to run in and die enough times for them to run out of ammo and hope the resupply doesn't gives them more.