Does anyone have a concrete pool? Any issues?

I'm looking into getting a pool and there are so many options. Hear enough not so great things about fiberglass to steer me away, but I really don't like the way liners look (i've looked at tons of patterns and I'm just not thrilled with the look.) I've only found one contractor that does concrete pools, does anyone have one? Do you have any issues with them? Does anyone know any other contractors?

Thanks!