Out here in the "West" we have great rallies! All are somewhat different, that is what makes them fun! Sometimes the WBCCI rallies are more "organized" and have agendas... others are rather off the cuff and spontaneous... I would suggest you check the rally calendar in your area and just go... there is always new folks to meet, new information to gain, new things to see and go... not to mention, always food!
Don't worry about the "best" ~ check out several and decide for yourself!
Mrs. NorCal Bambi (traveling in S Tardis)