I have both solid top and cutout saddles. Both are fine, as long as the shape, width, padding, etc., suit me. I have noticed the cutout saddles are pickier about the pads in my shorts/bibs. The solid top saddle isn't as picky.
And I have a few solid top and cutout saddles that aren't comfortable no matter what I try. There's no combination of shorts/bibs, saddle height, angle, etc, that makes those a$$ hatchets tolerable.