well, it depends
I like guns that you can dual wield with so i would prefer the Uzi or the Mini Uzi... but I would also like the MP5k which has no rear stock at all and a shorter barrel. The ROF for the Uzi and Mini Uzi are of course way higher than the ROF of any of the MP5s(up in the 900s). The MP5 series have been around since the mid 1960s and the Uzis have been around since...well i forgot but i think it was a bit after WWII(somewhere near the AK-47 in the 1950s).
damn, i don't know
you should have added the MP7
i would chose that
ROF- 950
recoil- less than the MP5
mag- 30 rounds
created- 2004
(i am a major MP7 fanboy, i even have the airsoft version, 360 fps

)