I've got a few...
Benchmade 921 Switchback. I bought mine, a limited edition with D2 blade and pewter-anodized handle, strictly as a "safe queen". But once I got it, I found it to be an amazing user. It's very sheeple-friendly; thin enough that I forget it's clipped to my pocket; much more comfortable in my hand than I expected; the small secondary blade is very handy for small, detail jobs; and man-o-man does that D2 wharncliff blade cut! Even though it's one of only 50 ever made, I can't resist carrying it; it's one of the most-carried knives in my EDC pool.
Fight'n Rooster Cannitler. I bought this one off eBay, mostly for it's looks; but once it arrived, it quickly became one of my favorite EDC slippies. It's slimmer than I expected, but the main blade is as thick and strong as on a "tactical" knife. That Solingen carbon steel takes a wicked edge, of course. It's like carrying a small tactical folder, but in an innocuous slipjoint package, and with two extra detail blades to boot.
Benchmade 880 Dark Star. Bought this one just to "complete the set", i.e. for the collection. But again, once I handled it, I realized it was just too sweet to leave in a drawer. Nice grippy black G-10 scales on gold-anodized titanium liners, and a gorgeous spearpoint blade. It gets EDCed a lot.
Those are the ones that come immediately to mind...