Ask an Aran thread.

Maxing combo recharge is bad for some people, when you get combo barrier and you have max combo recharge, you can't use combo drain directly after using recharge.

the best build should be:

1st job max everything but booster

2nd job everything but fenrir at 10 and booster at 17.

3rd job I really don't know, final toss is pretty nice for zak when you get freeze standing maxed, rolling spin in my opinion is better than combo recharge but combo recharge is awesome for pvp with tempest (but it's terrible when maxed and combo barrier)

I'd leave combo recharge at 11, and get 4 extra points from 4th job (when maxing combo barrier) because before that you don't really use it, rolling spin can recharge your combos fast.

edit: leaving it at 11 is too risky 28% hp reduction is a lot for arans hp, so maybe i would leave it at 15 by leaving spin at 16.