Hi Gary, good to see you talking about F Basses again. I remember that lovely flame maple cherry burst BN5 you used to post in the Delphi Forums years ago!
To your question, I find that F's are the best balancing basses on a strap that I've tried. I don't have a BN5, but my AC5 and VF5 balance perfectly. They make the stretch to the first fret less of a well... stretch than my other basses.
Hey firebass! yeah, I've been around since the Delphi Forum that Andre started. Crazy. That was a long time ago. Still laying it down low and funky. (Whenever possible)