Which Ampharos power up

I personally think regular Ampharos looks wayyy better than shiny Amp. I'd go 93

Shiny

If you're dead set on powering one up, I'd do the shiny, hands down. It's a half decent defender with volt switch and dragon pulse, so it's not a bad option for throwing into gyms. As an attacker though, Ampharos is kinda disappointing.

If you're talking about weighing between shiny, bad IV (by this I mean like 51% with a 4 in attack or something) or good IV, non shiny, it's tough to decide.

But a difference of 4 IV points? It's an easy answer. The Shiny.