That's a lot of gray. Gray paint too? Are you hoping to introduce color in the bs? What is your budget in $/sf, and what is the look you're going for (modern, rustic, etc..) Do you have a fondness for a particular material (glass, marble)?

I don't have a favorite tile source per se. I think about the final feeling of the room and the role the bs will play (STAR or extra). You've got a lot of small bits in the counter material, so you want to keep the bs more homogeneous - no little bits. But you could go for wonderful color and interesting shapes. The ones below are from Fireclay Tile and come in many different glazes.

{{!gwi}}

The walls will be sort of a bluish gray, and the woodwork will be white. I think I want the bs to be mostly white with maybe some crackle glass in it, but just not sure. The countertop is definitely the star of the kitchen, so the bs needs to be a supporting act! When I have things installed, I can post a picture, but in the meantime, I would appreciate favorite sites.