I am probably in the minority, but my favorite is the 102, for general purpose, all around use.
I don't use my knives for batoning wood, so I don't need a huge knife. I have always preferred knives that are smaller anyway. I just like the "feel" I get when working with a smaller knife.
The 102 isn't what I would call an ideal game knife for me though, because I prefer drop point blades when working on animals. The 103, while it is a neat looking knife, is a lot bigger imho than it really need to be for skinning. If Buck made a 103 version that was smaller, I would be all over it.
I know its probably blasphemy, because it is a classic, but I don't care for the 119 for the same reason.
I will always remember my grandad telling me when I was younger, you don't need a huge knife to get the job done, you just need a sharp knife. I've always found that to be true. There again, its just personal preference.
YMMV