Wonder Woman
Best: The Perez Years
I've said it before, but I don't see how DC has had so many problems with writing Wonder Woman over the last couple decades when Perez gave them the fucking blueprint back in 1987. The biggest achievement of the book is how it nails Diana's struggle to reconcile how cruel and unfair the world can be in comparison to the idyllic island paradise she grew up on without making her seem dumb or holier than thou. Further, it feeds back into her desire to try and make the world a better place not just by punching dudes in the face - though she does do a lot of that - but by connecting with and trying to understand all kinds of people. By being proactive and not only trying to stop crime, but fighting the reasons crime happens in the first place through large scale activism and through simply connecting one on one with other people.
Now, I will say I don't think it's the absolute best written run on the character. It's no slouch, but I think that Rucka, Simone, and Azzarello outpace it in this regard. But as far as understanding what makes Wonder Woman as an idea work, and how to make that idea and character empathetic and resonate, it's my favorite take easily. "God and Mortals" is the first thing I recommend to anyone who wants to know what makes Wonder Woman such a great character.
Worst: JL War
I'm part of the problem here because I did enjoy the fight scenes with her. That said, in general, I am over "Xena-lite" Wonder Woman. It misses one of the core ideas of the character; that Wonder Woman is an agent of peace. Yes, she's the finest warrior in the JLA and yes she'll drop a body when absolutely necessary. I'm not even opposed to the idea of having her be more adventurous or enjoying fighting for sport. However, having her revel in violence and killing, even the killing of parademons, feels wrong-headed.
Also, there's a difference between showing Diana as a fish out of water and making here a socially retarded dummy. Having her swing a sword around at an ice cream guy is the latter.
Aquaman
Best: Batman: The Brave and the Bold
There is no way to watch Brave and the Bold and not love Aquaman. Of this, I am sure. The character's enthusiasm and earnestness are just infectious. Adventurous, boisterous, and good natured almost to a fault, Aquaman is a guy who just fucking
loves being a superhero. Not only that, but he's going to do his damnedest to make sure
you love being superhero. This interpretation shows that maybe instead of making Aquaman a grimacing sad sack, the best way to get people on his side is to make him a friendly adventurer who just really, really enjoys what he does.
Get roused, fuckers.
Worst: Hook Hand
Fuck this dude. Now, granted, I haven't read much of the run featuring this version so maybe the stories are good. Morrison and the JL(U) team wrote him well, at least. That said, fuck this dude. For as much flack as Johns gets for his run seeming desperate to make Aquaman cool, DC has never looked more desperate to change the perception of the character than when they gave us this. Everything about him screams trying too hard. The constant angry face. The hook. The mullet. The perpetual chip on his shoulder in almost every incarnation I've seen of him.