Flat top or domed pistons

My last 6-8 small block and big block builds have been with flat top pistons. Mostly because of being a bracket racer when I bought most of these sets I didn’t want to spend crazy money for fuel. Now that I am running alcohol I think I’m leaving a lot on the table by not upping my compression some. I’ve heard all the stories about better flame travel using a flat top piston but I’m not buying all of that. My thinking is if you massage a domed piston horsepower is there to be gained. These Wisco Pistons almost seem to pretty to let sitting on a shelf. Have any of you guys done any testing on this?