A little over a year ago I bought my first subgun, a Vector Uzi with which I am very happy. In the preceeding 12-15 years I'd been shooting a friend's M11/9 once or twice annually. Whenever I shot the M11/9, I had fun but thought to myself, "It's just a bullet hose." This kept me from getting a MAC-type of my own and led me to going for the more expensive and what I thought was the "more practical" Uzi.
With more experience in shooting these guns, however, I think I may have bought more gun than I needed. The greater part of what I really get out of shooting full auto is the simple thrill of watching a dirt bank churn up and the energetic rattle of the firearm. The M11/9 can supply all of that anyone can ask for. Yes, the Uzi is more controllable and flexible in its applications, but I can't honestly say that I'll ever take advantage of all that can be done with the weapon. For recreational shooting, not competition, an unmodified M11/9 or other MAC subgun is probably plenty.
I'm keeping the Uzi and I wouldn't try to argue against anyone buying whatever automatic they think is best regardless of price. I'm only offering my case because it is easy to find yourself ratcheting upward in price ranges on these things, perhaps spending more than necessary if you will only be an casual shooter of stumps, cardboard, and such.