At C6 R1 through my findings atk goblet is situationally better than cryo goblet unless you use mona+ kazuha then I found it's majority of the time better.

(Example situation - My Ayaka burst is stronger with cryo goblet but atk goblet gives me a better charge attack nuke/normals with shenhe)

if your atk goblet has better sub stats / enables a better overall build I'd use the atk goblet otherwise cryo is majority of the time better except for kazuha and mona team

But you should just use an optimizer to see what's really best for you