There's so many beautiful options, and it's hard to pin down which is best to match your cabinets and floors. Would you consider getting a professional's opinion?
We used Lindsay from Lulu Designs. I promise, she's affordable (inexpensive, at least IMO), and you can tackle many ?s re: your house in 1 hour. $150/hr. And she will come to you. But you have to get all your ?s in within that hour, as she charges by 15-20 min increments if you call her after your meeting. You can see a youtube clip of her work from HGTV. She's so down to earth. And she gives practical and cost-effective insight, if you want it.
http://luludesignsonline.com/
She helped us with our previous home, from picking furnitures, to placement, light fixtures, etc. I'm gonna see her for paint colors and kitchen remodel, soon.
Good luck with your counter top shopping! I myself went to a couple of slab yards and got overwhelmed with the choices.