Call of Duty: World at War 1.07 Update

I don’t play much ps3, but when I do I play Call of Duty: World At War. Today I was notified that there was an update which I installed. I was hoping that this would fix the connection issues in zombies mode. Not only did it fix them, but the levels are much longer now. And aiming is much harder or maybe that’s a glitch. Now I am thinking should I get Call of Duty: Modern Warfare 2?