I asked myself the same questions when I bought mine.
I like the RIBS better but there are down sides.
Again replacing the tube at some time will be an issue and they are not cheap
. Mine was 4k! Just make sure they still make them and do not believe the dealer check the manufacturer yourself.
Also if the boat is in the water
for any length of time you will start getting bottom growth on the aft end of the tubes which is a pain.
Of course the fullness of the tubes are also temperature dependent.
Thats all I can think of for now.
Despite the above bought mine for $8k and sold
it 4 years later for $8k. It did have a new tube but that was paid for by someones insurance
company (long story)
Hey I see you have a J100, great boat, raced on a friends here on Long Island Sound
last year and loved it. I have owned several J Boats myself.