For me, the older I get the smaller my knives seem to get. I like practical knives that have a thick working blade, one that provides good utility. It needs to sharpen easily, take some hard use, and not rust.
I have a couple of old "dress knives" that I carry when not a work, an Al Mar Hawk with ivory micarta handles, a 30 year old Case canoe, and a 20 year old Gerber Silver Knight made by Seki.
But for work, simple and sturdy fills the bill. I carry a Kershaw Scallion S110v as an EDC, and my newer EDC is a CRKT Drifter. The Drifter is a really spiffy little knife, kind of like a Sebenza in feel except thicker, and with an inferior steel to the Scallion or Sebenza. It is a surprisingly good knife, though.
Both Scallion and Drifter clean up nicely with kerosene, mineral spirits, etc. with no worries about the knife handles. This makes them ideal work knives as I can get off caulk, tar, roof sealants, mastic or anything else I get on them.
My only guilty pleasure: I play with my Benchmade Apparition as it is such a well made, cool knife. Haven't EDCed that one, and it is the only knife I own anymore that hasn't seen extensive pocket time.
Robert