I want a good shooter game with heavy firepower :P any suggestions?

I am kinda bored and i'd like to get a nice shooter but I have no idea what to get , I want something with intense firepower and explosion , just got the new duke nukem and I was kinda dissapointed . I got crysis 2 and again , dissapointed . There are like only 2 or 3 cool weapons in the entire game . Do you guys know a good game ?