Powering up vaporeon past level 30
Is it worth it or a waste of dust ? I read an article that explain vaporeon will remain the strongest non legendary water type for a long time. But who knows niantic may do the right thing at some point and nerf vaporeon or maybe buff suicune or others water type. It would really piss me off to invest a lot of dust into it for nothing just like I invested a lot of dust into blissey and snorlax just before the gym rework and now I never place them in gyms anymore.
If it's worth it what minimum iv ?
My strongest hydropump vaporeon is only 84%. It maxes out at 3047 vs 3112 for a perfect one. My second best is 82% but with 15att. I ran some sims on pokebattler and the difference with 15/15/15 is absurdly small in terms of damage done, damage taken... even smaller than differences between Dnites (I did a lot a Dnites comparisons)
But then also the difference between a level 39 and a level 30 is not that big especially considering all the dust that could also be used to power 2 mons from 20 to 30.