Victorinox Swiss Army Spartan. Transparent blue. Engraved with my name at the Swiss Lion in Lucerne, Switzerland. Has rarely left my side for 2 and a half years. Never had a problem with it.
For EDC I use a nameless Swiss affair with a rostfrei/stainless drop point blade, liner lock, and micarta grips.
Smooth action, locks solid, and it was cheap enough that I don't mind using it as a utility knife (though I have little faith in the liner lock).
For dress I use a Buck 501 Squire.
As fixed blades go I keep falling back to the Western 66 and Schrade 152 model skinning knives (utility, ergonomics).
Next will probably be a Benchmade Rukus.
got so many i have to rotate em , kershaw military boot knife, kobalt razer folder mostly for work, s&w swat tactical folder, kershaw 1660 ckt, or mt new school jaguar butterfly ive had for along time, love knives but only one a time.