LeCruset has a nice grill pan that has a flat bottom that would work nice on a smoothtop range. Probably Staub has one too.

This past year I found a cast iron grill pan (non-enameled) at TJMaxx for a great price. Decided to buy it (as my enameled non-stick cast iron pan started to shed the coating after just a year or two).

I have used my other non-enameled cast iron on my glass top, and this new grill pan works great also. It has a flat bottom (but no grill press) and I have had no trouble with it.

I have the Staub grill pan which I use on my induction cooktop. The shape of it (a rectangle) means only the center portion gets really hot though they also sell a smaller square shaped one. The LC one is square.

It works fine to add nice grill marks but so far, things stick to it pretty bad. I am going to try seasoning the surface by coating with oil then baking the pan for 30min and see if that helps.

Mostly I just use it as a small broiler pan which it works well for as in that application, it is pretty easy to clean up.

If I can use this one without the very tough clean up, I would use it a lot as I like the grill marks.