Snorlax or Wiggletuff

Wigglytuff is a snorlax poor ;-)
i think
for upgrade friendly gyms > wigglytuff
for down ennemy gyms > snorlax

Well... if you Have to, the Wigglytuf sounds more appealing, but the snorlax is much more rare.

I'd honestly wait till you get either with better IV's and good attacks, I don't evolve anything under 82% IV's, and once it's been evolved, if it has a good moveset, only then you should power it up.

Snorlax is a tier 1 attacker and defender, and at 76% (and given the fact that you will not find many of them), I would say he's "close enough" to be worth powering up. I have two Snorlax and even the one with awful IVs can easily take down 2-3 defenders of similar or even slightly higher CP.

Wigglytuff has great stamina, HP, and potential as both an attacker and defender, but generally much lower CP than Snorlax, which will keep him towards the bottoms of gyms.

In short, I would power up both of them, but Snorlax as first priority.

Mhmm.. one of the top 3 Pokemon with its best attacking moveset or another pokemon? I don't know man.

Hard to say without you providing their CP, if powering up that Snorlax isn't a life project, I'd to that.

With the information you gave, I'd say both are worth powering up. Wigglytuff is an alright defender, but it really shines at training friendly gyms. While Snorlax is a good attacker, it's actually quite slow at taking down gyms because it relies more on its big HP pool than its DPS. It will get the job done though, personally just not my favorite attacker.

what is their level / cp? Lick / Bodyslam Snorlax is only good for offense as Lick is a terrible move on defense. Wigglytuff with Pound/Hyper is good for either but is very cp efficient which is both a good thing and bad thing. You will not be able to be the gym leader with a Wigglytuff so you are likely to get kicked out of the gym sooner.

However, jigglypuff candy is much more common which allows easier leveling with the wigglytuff. I know I have 4 Snorlax that I am currently trying to get to level 30 and it is going ot take forever to get there. My level 30 Wigglytuff is a beast with Pound / PlayRough and is strong for both offense and defense.