Which Exhaust Upgrade should I go for ?

[Tony's 4.8]

Hi all. Just found out the muffler is cactus. Being that I intended (next year) to put a bigger system, I guess I may as well do it now. So I am reaching out to those who have upgraded their exhaust on a 4.8 Patrol, and if anyone has gone further by including a set of extractos? I am wanting feedback on the following:

-How many inch exhaust was recommended to you?
-What brand did you get?
-What was the cost?
-Are you happy with the performance?
-Did you do extractors as well (if so what brand) ?