I concur. While the "fun" factor is debatable (they're both "Fun" in their element), the N20 has demonstrated to be a little more organized and user friendly.

N6.0 can be faster on a tight reach with its bigger jib, but the N20 can usually score line honors (N6.0 may correct out faster).

Bouy racing - N20 hands down. Easier on crew (smaller spin easier to trim/snuff). Auto tacker makes upwind duels easier too.

Distance racing - I'd still shy toward the N20 because less stuff is on the tramp to cut you into pieces. Lower rear beam on the N20 does make it "buck" in big chop, but it doesn't pitchpole as often (larger volume in the bow I think).

just my $0.02