Cast aluminum as it does not warp and I have a glass-top stove. I see Amazon has the Diamond brand which is relatively inexpensive and see good reviews. I'd like to have something as non-stick as a real Teflon surface.
Had unsatisfactory with a ceramic surface, and the Rachelle Ray Teflon pan someone gave me was plain ridiculous, everything stuck to it, even when seasoned! Would like to avoid those experiences with this next purchase.