I just played yesterday for the first time in a while and I have changed my mind. The shrieker is now my favorite weapon. Crazy powerful (maybe even too powerful) and incredibly fun to use. It's aiming system is a nice little touch that only the Wii could do. I likes it.
My signature is every gun other than, SMAW, Warp Pistol, Shrieker, Hive Cannon, Carbonizer, and the TPC Launcher. I love all guns that have the mind set, shoots fast... kills fast. >=D --- Why? Because.