great question, ive been meaning to ask the same thing. i had some more specific questions.
now ive never toured so have never used either, but i was wondering.
with a B.O.B do you run into many problems going around narrow turns?
does pulling one in heavy traffic areas cause any problems?
if your on a bumpy road or maybe a trail does it bounce around enough to cause issues?
how about any issues with shipping it, or maybe putting it on a train? i'd like to do a one or 2 week tour where i go as far as in the time i have and hop a plane or a train back home.
is there anyone who has used both and likes panniers better? and why?
the B.O.B in general seems like it would be more convenient, but since ive never tried either i'd really like to hear from the voice of experience.
thanks