It really depends on whether you want a locking knife or not. A lot of people on this forum default to locking knives, which is fine. But, you've been using an Old Timer. I bet that is a slip joint. And your Buck, is it a stockman, perhaps a 301? If so, do you want a locking knife or do you want to stay with a slipjoint? If it is a locking knife, then I would recommend the Spyderco Delica IV, the Spyderco Paramilitary 2, the Spyderco Stretch 2 FRN, the Benchmade Mini-Griptillian, the Buck Vantage Pro, and the venerable Buck 110. But, if you prefer slipjoints, well that is a different ballgame. In that case, you can still get an excellent Buck 301 stockman. If you want something a tad pricer, but nicer, look at the excellent knives made by Great Eastern Cutlery. I would recommend a Great Eastern #73 or #73L (linerlock) to anyone. The Great Eastern #66 Calf Roper Stockman is excellent, as well. Ultimately, it comes down to what you are comfortable carrying.