Queen's my favorite, with Case a close second. Queen makes a lot of patterns that are different, and also offers materials like the D2 and ATS 34 blades without charging two arms and two legs, so that makes them attractive. Case is old and traditional too, but so much of their product gets to be so collectible that is unaffordable to me. Case charges WAY too much for anything with ATS 34 blades. Buck makes great products too, but for some reason I just cannot work up very much attraction to them. I have a Buck 112 I got for Christmas, but it feels like a block, thick square and heavy, just awkward when I try to use it. Good knife, but it feels unnatural to me. I also happen to like European made slips, Bulldog, Hen and Rooster, etc., have a few of those. Some of them have some great stag and fine old carbon steel blades, a perfect combination for an old traditional knife lover. But most of my very favorite knives are D2 Queens.