Well, I guess if it amounts to which would I want my life to depend on, it would be the M-1 Thompson. Kind of heavy, but very reliable and with the best "man stopping" bullet of the war.
On the other hand, if you factor in production costs and other logistics issues, then it would have to be the PPSsch-41. Really heavy, but totally reliable and the high capacity magazine was kind of neat.
The Sten certainly was similarly easy to produce, but I think it was really screwed over by its lousy magazine system.
PPSH overall. Even German troop nicked and used these when they could. Reliable, fast, simple design. Rather heavy however, not great at ranges.
MP40 was prone to jamming and stopping working in freezing Russia. Thompson was heavy, sluggish and expensive. Sten, the less said the better, cheap stuff that could be easily mass produced. Its performance showed.
This message has been edited by Pax_Britannica on Jul 16, 2005 4:45 AM
I gotta go with the PPS-43 (second from top). It was cheap, reliable and churned out in the millions. Russians were slow to learn on sub-machine guns, but when they finally got into it they got into it BIG.