I don't tend to mix batiks with prints either. I think the texture is different as well as the look. I will add in a LITTLE if it is only a small amount, but that's all. I do mix homespun and "country" colors. As long as the look is the same as the homespun, I think they work well together, plus a whole homespun pieces is too much plaid for me. Now, all those rules go out the window if I'm doing a truly scrappy quilt, because all those would be scraps that I've used, so they get pulled into that kind of quilt.