Why quartz at all ? I do not understand this need for fake stone when there are 1000s of real stones . As for these 2 choices I would do the less busy one but honestly I need a lot more info to comment on which one works in your space .

Hi @hillell, I have also considered Lento and Nimbus. They both have a lot "clouds" and veins, and are not at all like a solid color. I personally like Lento better because of the creamy white veins which give a brighter feel. By the way, I am also considering Silestone et Serena which is a lighter grey with subtle white veins, but not the "clouds". I would love to know what you got in the end.