The UMP's crappy 600 rpms will lose every head-on fight, but the double burst makes it kickass at medium range. Suppressor+laser signt makes it perfect for sneaking around as a recon picking enemies off.
My favorite underrated weapon is probably the KH2002. It's crazy good at medium-long ranges while also being better at hipfiring than most ARs. Even with a heavy barrel I regularly beat people spamming from the hip.
I can't understand what purpose the PP2000 is supposed to serve. It seems like it's supposed to be sprayed from the hip with a laser sight, but it has the same crappy 600 rpm as the UMP. The MP7 fills the exact same role, except it shoots at 950 rpm so it can actually win a close range shootout. --- "Lesson number one, trust no one. The moment God crapped out the third caveman a conspiracy was hatched against one of them!"
Im still a noob and know little about whats to come but I am loving the PP2000. My KDR is climbing gradually and I have yet to go negative since using it as my weapon of choice. I have always liked the small smgs over larger assault weapons. I use it with the holo scope and it has been a great asset do far. But like I said Im a noob at level 14 so we'll see further on. Wish I had a MP-7 though. --- Gamertag: YELARAKA