I never really quite thought of the file in that light...it's going to give me something to think about the next time I buy a tool.
The ST has an elegant spring locking mechanism that works like a Swiss watch (pun intended). The Core's locking mechanism is simpler (no springs) but effective. Both work very well. To me, the Core has a better locking system in that there is less to go wrong.
I chose the RS version for the scissors, and I have little use for a file. Files wear down and you can't sharpen them. As such, after awhile I'm left with a dulled, useless hunk of metal on my multi-tool. If you want a file, there are other ST's that give you that option. the ST comes in different tool configurations and the Core does not. Advantage to tool section goes to the ST.
Sheath: The ST has a much better sheath. The ST sheath is slim/fitted, and has a snap. The Core sheath is not bad, but it's a larger pancake-style sheath with a velcro closure.
Tool Selection: Here is where it gets strictly personal. The ST wins with me on tool selection. Both the Core and ST have Phillips and flat drivers, knife blades, serrated blades, saws, bottle/can openers, etc. The ST RS tool has a fine screwdriver and scissors. I chose the RS version for the scissors, and I have little use for a file. Files wear down and you can't sharpen them. As such, after awhile I'm left with a dulled, useless hunk of metal on my multi-tool. If you want a file, there are other ST's that give you that option. the ST comes in different tool configurations and the Core does not. Advantage to tool section goes to the ST.
ADDENDUM: I forgot to mention tool accessibility. The ST has the advantage of being able to access the tools without having to unfold the handles.
Good review, mate. You made me think of a m/t's file in a different way now