Franchi LF-57 vs Colt SMG (w/ John Keene)

LF-57 Available from Morphys here:
https://auctions.morphyauctions.com/_N__MARS_EQUIPMENT_CORP_FRANCHI_M1962_MACHINE_GUN_-LOT667044.aspx

Today John Keene and I are comparing and contrasting a pair of quite different submachine guns. One is a Franchi LF-57, a rare second generation stamped Italian design very similar to the Walther MPL/MPK. The other is twenty years later, a Colt SMG – a closed-bolt third generation design based on the AR15/M16 platform. The question is, if you could have either one, which would you take? It’s a question of collecting interest and uniqueness versus practicality and shootability. Which would be your choice?