I'll just test the waters a bit... this thread is something that's been on my mind for a while...

I have become a big fan of boar brushes, but I also like badger... so me it has lots less to do with the lather making ability, and much more to do with the feel of the brush on my face. I find that badger is very soft, and boar is a bit stiffer.

That being said, sometimes I feel like the badger is too soft (if you can believe that), even when I set it deep into a brush to make it more dense. All things considered I think boar brushes, specifically Omega, are great.

I would be really hesitant to recommend one over the other... It would boil down to what feel you like in my mind.