Bad picture, but I do have these knives and would not pick any for a two year EDC.
Why?
While they are all awesome knives, and all make a fine EDC, but given a choice...
The XM, is more of a prybar than a knife. It cuts good but not as good as a thinner blade with a high hollow grind. Also a tad heavy and blocky in the pocket.
The SNG, mine is DGG so it very thin and light and very grippy. Cuts great after the reprofiling and with it's full flat grind. Better cutter than the XM, lighter and thinner in the pocket. For a two year EDC I would want a little more cutting edge.
The Umnum, is awesome and I carried it for a few weeks straight... now I carry her on and off as the mood strikes me. It's flaw? The clip is way too close to the edge of the scale, and will digg into your hand (right hand ring finger) under use. It really would be perfect IMHO if it were not or this hot spot. As it cuts great due to the high hollow grind, carrys thin, and does not weight down the pocket like a XM can.
So what would I go with for a two year EDC?
A large double lug micarta 21, not too tact-T cool looking, great grip, no clip digging into your finger, because the clip sits near the middle of the lockside scale. Very grippy, blade tip is stronger/beefy'er than the Yum-Yum zaan... While still being a good stabber, better stabber than the XM or SNG. Can handle light to med prying with ease. Also has the CRK bushing system... I love Chris's S30 heat treat (like VG-10 on roids,) gets razor sharp fast and will hold it for a while. It's not as hard as some other makers, but it will strop up faster than others, being I sharpen everyday before a knife goes into my pocket, edge holding is never a problem. (by "sharpening" I am talking a few strokes on a Spydero Ultra fine benchstone and a quick strop.. May take 3 mins from start to finish)
I just really feel like the Large Micarta 21 is the "top dawg." it's classic simple styling, ease of upkeep, and cutting performance are unmatched.
sorry for the loooong post
