Definitely the first quartz. I'd rethink that dark island unless the floors become lighter. That's a lot of "dark".

Lucern Lake is my favorite of those

I also like the first, and I agree the dark island is dark for the floors, which are lovely. Any chance you can maybe do the island in a blue?

#1 for sure

#1 looks best

#2 with the backsplash

#1. I also looked up your backsplash tile, which you really should have included in the pics when asking your question. Pics below. That is a variegated tile with a lot of grout lines. If you are set on that backsplash, I’d get the quietest plainest counter, which is #1, or you will be having a battle of the patterns.

What is best to do is not pick the backsplash until everything is in. It is almost impossible to pick a backsplash ahead of time without making a mistake, unless you have the unerring eye of a designer who has been doing this for years.

I have LG Rococco and used it as my backsplash. Designer chose it and I love it even 3 yrs later!

#1 And agree about lightening up the floors

I prefer the first. Are you able to go somewhere to see the whole slab? That might help you decide.