SonVolt
Full Fledged Farker
Respectfully, I have to disagree. A polished cooking surface in cast iron helps to keep food from sticking, and makes cleaning so very much easier.
A few years ago for Christmas, my wife gave me a new Lodge pan. Before using it, I sanded it smooth. I did a great job, and spent a few hours making the inside of the pan completely smooth. It is light years ahead of my other Lodge pans which have the "factory" finish. They will NOT smooth out with use. General use of a Lodge pan isn't abrasive enough to smooth out the factory finish.
A lot of the new "higher end" cast iron, have a smooth finish. This is one reason they cost more. Lots of hand labor involved.
Smithy Ironworks is another brand to check out. They specialize in a smooth finish.
Food shouldn't stick to a "rough" surface either assuming it's seasoned properly. I flip between ultra smooth carbon steel and cast iron frequently and food doesn't stick to my Lodge anymore than it does to my deBuyer. A little kosher salt and a paper towel cleans both right up.