I weigh in at about 230 or so, and I have had good luck with Selle Italia Flites, and most recently the Fizik Arione. I find the added surface area helps out greatly. It is also a fairly slim saddle so it eliminates any rubbing against the thighs. The recessed suede stripe down the middle also helps if you are worried at all about sensitive areas. I too, have found that anything with a cutout is a very painful saddle!!! Good luck...
Jeff