personally reio
you get 2 sets of lv 100 gear for 34 tokens a set
and if you go all the way to the partner tokens you can pick up some nice partners as you do so/ get lv 7 hogus and stones from it.
so in reio it would be 60 gold per outo win up to the 3rd slot for gear tokens so 180 gold X 34 for 1 set of lv 100 gear = 6120 gold or the lv 80 gear is about 20 tokens i think? so 180 X 20 = 3600 gold X2 if you want 2 sets
if you go up to the partners you can pick up the bikinis partners for 14 tokens each so outo wining up to there is 220 gold X 14 = 3080 gold
if you were to get 64 tokens total you can always pick up shinso gin or kenpachi unohana for 60 tokens towards the end or buy a few set of partners etc..
Normally a goldwheel + 20% rebate occurs with reio and 2nd day of reio gives you 9 fury stones total
so its a good deal for all the stuff you get
if you want gear but your not lv 100 id recomend picking up the 100 sets anyways since they are great and you get a damage rate boost too