User blog comment:Imrlybord7/TAR-21 vs UMP/@comment-670668-20100329013601

If the 5% movement speed difference isn't enough for you to care, then go with the TAR. Since the UMP has a very similar damage range of 40-35 (versus the TAR's 40-30), you would kill faster with the TAR's higher rate of fire with targets medium to close range. At a longer range the UMP might be considered damage superior to some people, but you'd be better off with an assault rifle anyway for targets fire away from you.

Two damn nice guns though, use them both quite often.