I probably only have 8 or 10 Bucks (a range of types), but I am finding that a 303 or 301 is in my pocket more often than not. In my opinion the 300 series is a good example of Buck quality.
Reasons I like the 300 series:
1. Outstanding heat treat on the stainless steel. Edge sharpens nice and crisp. Easy to touch up when dull. No rust! (Have had a hard time jumping on the carbon steel bandwagon with traditionals)
2. The bolsters, liner, and shield appear to be cast from one piece of nickel silver.
3. The rugged delrin scales seem to be molded right to the liner so there are no gaps in between.
Most of my Buck experience is with the 300's but I think they are indicative of the quality going into all the Buck lines of knives. Additionally, the diversity in their product line is hard to beat whether you are into traditionals, modern folders or knives for hunting and fishing they have it covered. For my next knife purchase I plan on a Pathfinder fixed blade that I plan to use when it's time to do beef this winter. Also, (I hope you are listening Buck) if they ever produce a USA made trapper based on the 300 series design, I would be all over that like green on grass.