I like the Tenacious, it's kind of heavy for a pocket knife (a little over 4 ounces) but is a good looking, well made knife. The Dragonfly2 is also a nice knife and perfect for carrying in the pocket at a little over one ounce.
Good EDC knives under $50? My B-Day is coming up and my parents are thinking of allowing me to get a pocket knife. I so far have my eyes on the Spyderco Tenacious, Spyderco Dragonfly2 and some Kershaws.