Aside from the SAW, I vote for either a remmington or mini uzi.
As for someone suggesting an uzi over a mini uzi, the INF team said they choose a mini uzi, as the uzi has no advantage over the MP5 (aside from cost, which isnt really much of a disadvantage right now). The mini uzi on the other hand, is much smaller and lighter, and so can fit into its own little slot in the INF armoury.