I need help choosing between nero and emiya for the 4 star ticket.
I assume we’re talking original Emiya? All else being equal (you don’t need an AoE Archer in your roster way more than you need an AoE Saber, or vice versa), I’d take Emiya.
He’s overall a better and more consistent Servant in about every way other than “not dying.”
On the other hand, if the idea of an unkillable 4* Saber appeals, Nero has that niche covered.
Nero also has a Chest. Emiya also has this. But not in spades!