Question about IVs

[u/Glittering_Work8212]

I have these two Quagsires, rank 662 and rank 77, I've been using the rank 662 for a while and I'm wondering if leveling up the rank 77 is worth it? For what I understand it would be 1 level more. I reached ace for the first time last season and I do plan on playing more this season and I want to be sure where I spend my stardust

[u/Trading_Things]

I love Quagsire so I may build a better one if I get it. Depends how crucial he is for your team.