Let's see:
If you want to be a pro noob (meaning you have lots of positive stats but have no real skills), go ahead with a Shipka.
No idea about the Sten.
TEc9 is pretty good but has a mildly slow firing rate.
I would go with the Tec9.
Bull. Shipka and BAR are NOT skilless weapons. People just hate that they do high damage or shoot two bullets. They require skill even in spar. Just holding the button requires skill as well. You have to maneuver or someone can just come behind you and kill you.