I've been meaning to get a SMG for a while now, for I play sniper and in close range, my side gun doesnt cut it anymore. So, im looking for a light, fast alternative and those are my two choices. Price wise, the MP7 is cheaper and apparentely lighter but lacks power when compared to the UMP45. However I dont need power, since I use a (very beautiful) Gas Powered VSR of 550FPS. So, opinions?