I've got steiner 8x42 bino's, great in low light even compared to my Z6i scope, no difference IMO.
But I will say that the build quality isn't that great, one eye cup keeps falling off, tried to contact them with a view to getting replacements that might stay on better - but they never got back to me. Also the flip covers on the front are removable - both locking clips have broken so they covers can slide out if not too careful.
The two issues I've encountered are not a problem now as I've adapted things to suit, but shouldn't need to really. Value for money all the same.