Genei Ryodan/Phantom Troupe
Hmmm, hard to say. Since we haven't seen the Z.Twelve in action yet while we've got a whole arc featuring the Ryodan. And some of them are my favorites!
As for now I pick Ryodan, cause I could have a chance to get close to Danchou want to speak with him so much
Hard to beat the Zodiac when you have fame, money, and power. Unless you've to dress up as a particularly difficult animal the Zodiac is simply far more prestiegeous and powerful than the Spiders in every single way. You don't even have to get into dangerous situations as you can take a bureaucratic role similar to Pariston or Chidol, who are both described as character lacking in power by Pariston. Yes of course he could be lying but it'd mean the two characters obviously don't get into activities that require phsyical fighting often.
Can't be sure at this point.
Btw, I hope that with Netero's death will come the change of the Zodiac's members to their human-looking selves. However considering Togashi's 'commitment' I highly doubt that. In addition, if I'm not mistaken, the lot of Beyond Netero also looked bizarre, so I'm wondering why he's changing his drawing style.
Genei ryodan whole life ....
The Phantom Troupe are great characters, but I don't think anyone here would actually want to join them in real life, unless they happened to be okay with committing mass-murder and other morally questionable acts.
Considering that Ging is on Zodiac Twelve and they were sparring partners with Netero...I pick the Zodiac Twelve.
Also, Pariston can mindfuck the whole gang to death.
Damn Zodiac look like a bunch of circus freaks. Cosplay gone wrong. That crazy tiger guy on Ripley's Believe it or Not. Jesus. At least GR look like they're business.
I don't really know why I should join the Genei Ryodan, even tough they are amazing antagonists. It's just that I'm not up to killing and stealing. So I would choose the Zodiacs. They are the stronger ones after all and it's obviously much more fun to fool around with them.
Genei Ryodan all the way.
They're a bunch of strong people and they also give HXH some humour. XD
ryodan just chill there life
and they are some how better then the other organizations in animes i think
Some reasons as to why i would choose the Zodiac:
1 - Netero.
2 - Nen-mastery acomplishment required (think Ging, then get in his range).
3 - Awesome looks, HxH wise (deal with it).
4 - Ryodan is just a bunch of wussies with their "Danchou, danchou, wah wah wah", while Zodiac is more towards like "What you said old man? C'mere and let me beat some sense into you".
5 - They need a replacement pair of Trolls right now. Much more of an incentive.
6 - Last, but not least, Chidol/Mizaistom/Botobai as really cool teammates, among cool teammates. :]
I don't think the question is 'who would win in such a fight'. The Zodiac will most definitely win or nothing even makes sense about the power hierarchy of this world (The Hunters are the guys who are supposed to be hunting down people like the Spiders).
Note that even if you want to lead a life of crime, Pariston shows that with sufficien tpower and deception you can be part of the Zodiac and continue doing nasty things. Okay you can't probably can't do straight up mass murder (they'd get you kicked out fast) but there's definitely a lot of potential room for corruption even in the Zodiac.
The only thing I can think of against being a member of Zodiac is if dressing up as an animal is a necessary criteria.