I got the Happs ms pac/galaga 4 way. Don't like it. Spring/action is way too heavy. My standalone CP is not light, and I feel like i'm dragging it around. Seriously, it would be more fun to row a boat, and less exercise. I'm going to A) open it back up and make sure something's not wrong in there or B)try to bend the spring or replace it. I have a happ super spring that feels fine, may sub that in there for a while.