Definitely watch till Marineford and all of pre timeskip, they are all very well paced and have good animation style.
Post timeskip is where the anime has been very questionable.
- Shobondy, Fishman Isaland and Punk Hazard are bearable to watch, but Deressrosa was pretty wank apart from Luffy's final fight, and Zoro finisher vs his arc oppenent.
- Shit tier animation for everything else (excluding Viola dancing )
, and the whole arc is dragged tf out.
- Read the Zou arc. The anime makes Jack skip leg day and Zunisha looks like she's made out of paper mache. Watch the anime for revire segment tho, that was pretty good.
- Read the whole cake island arc, there's no two ways about it. ๐คข๐คข๐คข You don't want to be witnessing the Big Meme for more than 20x longer in a vastly lower quality.
Wano so far has been very good in terms of animation, art, and pacing but some bits are still kind of dragged out. You will have to judge this one for yourself.