Wano easily because
Zoro the whole crew is there. Dressrossa has a tons of side characters that I don't give a shit about, and WCI was just an escape arc so there's really only Luffy vs Katakuri to look forward too.
In Wano there's multiple match ups to look foward to and discuss every week.
Also there was ZKK for me to invest in
(that didn't turn out well...)