I dunno, they're not really complete products. They're not even sold separately anywhere. And you're required to have prior knowledge.
The only exception I'd give is the first chapter. You can grade the shit out of that. Hell, I'd love it if people graded first chapters, and I'm really not into the whole grading thing.
One Piece
G5 is awesome. Nice contra having Tashigi the captain of those people.
I love Smokes guy dude an' all, but man, why he gotta be a thing. I don't get him. Sure Luffy's a pirate, sure he has a bounty, but Smoker ought to be more case-by-case about these things. It's like anyone who self-proclaims himself as a pirate is a pirate, where it should be, the marines deciding who's a pirate and who's not. He's way too serious about catching Luffy.
Luffy's gotta beat the shit outta him though. No way he's surviving that fight. At the very least, Luffy's escaping easily once he surfaces.
Also I think lion dude may be a chimera. Lion head, turtle body, and all that.
HxH
The eggs reveal was pretty crazy. Ging's stuff about Pariston having fun with them could be:
1. Fighting with them (lol)
2. Using them as an army (what)
3. Experimenting on them (probably)