Socom Elites are gonna get reintroduced, might be the answer to your questions.
But for now, let's assume your choice is an old SOCOM and a EKI Mach 1
1. the EKI has the safest handle for slippery conditions.
2. neither of the knives have rusting liners
3. Chisel ground (EKI) VS double ground edge (MT)
4. Both really good steel, but I prefer MT steel.. dunno why.. I suppose their HT is a tad bit better.
5. Both blades can be had coated if rust is a concern.
6. Both blades have a very good reputation.
7. Neither locking liner on these will fail altought the steel SOCOM liners looks like it will last longer.
8. SOCOM is much more versatile and general utility/defense minded.
9. SOCOM's overall construction is stronger altough the emmerson will break your wrist too before it fails, I just feel the SOCOM is even tougher.
10. Mach 1 is probably a better defensive knife
11. Wave feature makes it a VERY fast opener and is a good showpiece too for the crowd
Kinda like a toss up for me, altough I favour the quality by Microtech. I'm not gonna use my pocketknife for defensive purposes, considering the odds of ever needing to. And should I, I am pretty sure my zytel spyderco endura can take care of the situation as well as any tactical folder
Greetz and take care, Bart.