Tonight I was laying down a bass track for a tune my guitarist came up with, and I decided to record it once with a J+rounds, then again with a P+flats. Have a listen.
J+rounds
P+flats
90% of the time I reach for a P with flats, but on something like this, I gotta say I think the J with rounds works better.
for me the P sooooo wins in this case. it's not even a contest.