Hey Tipper!
Contrarily to Jannis, I'm on the hard cups' side.
In terms of soft cups hurting less, hard cups aren't really that violent, I'd say they hurt a bit less than Taibolos, or as much as Epics do.
And although it's true that people have broken some cups, as long as you don't play outside under 10-12 degrees, I think you should be fine. I've been using hard cups since 2017 for high as much as for low and I've never had a problem.
Last point that'll definitely go against soft cups : when you drop a diabolo, the soft cups transmit the energy of the shock to the rings of the diabolo, which are not as capable of absorbing such a shock, and I've been seeing many posts about rings breaking recently.
As for G3 cups, the only difference to G2 hard cups is that the edges of the cups are about half a millimetre thicker (a difference that one can however notice) and they should thus be a few gramms heavier. You also have transparent color choices, other than that G2 hard and G3 hard are very similar.
I hope you can get a good overview with both our comments! And no matter what choice you make, choosing evos is already the best choice you could have made

Welcome back!