I've had them for 5 years and I love them. I have a mix of the Great White, Great White Square, and Great White Coupe. I think I had one square plate crack, but I think square cracks easier. I have knocked the crap of them on the counter accidentally and they surprisingly haven't chipped. They are so classic that I'm glad I went with something basic.
I have the similar Everyday White by Fitz and Floyd from BB&B. My cabinets aren't deep enough to store a plate with a diameter greater than 11 1/2". They've held up really well.