That is a tough question. I don't know that many Busses. I have only owned 5 all of them users.
I might have to say I like my modded SS. It gets used the most. The pumpkin GW gets carried every day, ever where, and used every day. But if I have the SS, and the GW there, the SS jumps out and starts slicing things. Slicing meat, veggies, opening mail, cutting boxes, wood.
The GW might be gaining because I just refined the tip a bit more. It is super handy.
If my GW had an AD handle, with GW blade length and perhaps a slight swedge.
But again, I don't know that many Busses.
If I had a straight handled SJ, or straight handled Badger, or SHBM, or an OD, or a Nick XXL one of those might be my favorite.
I do like chopping stuff with my FBMLE, and that is probably the reason I got into Busse. My recently acquired AshCG has been lots of fun. Seems a great mid sized blade and very handy, but I can't really just walk around with it on the belt, same thing for the FBMLE.