I know pointless question, as for now, few in the US that are non-LE / military can own.
Still, just as a question, what one would you want.
I think the Glock 18 has X2 the rate of fire of the Uzi, both have 30 + mag options, since we are living in pretend land both have stock options, the Glock's effective range I believe is 50 m and the Uzi is 200m (however I'm thinking 100m is more realistic).
Just throwing it out there, maybe pointless post, IDK. I was watching something on the History channel (think Lock n Load) and the showed the G18. They also mentioned how the SS pulled out a Uzi when Reagan was shot. Wonder if they would go G18 or Uzi now (not considering use as a frisbee).