If you ride with others maybe you can ask to try their bike and see how the saddle feels? Some stores have loaner saddles you can put on your bike for a while.

Some club riders have multiple saddles lying around. I've had 5 or 6 at times, gave some away.

Your weight isn't really all that high. I've been about the same (200 now) and I've ridden with heavier guys. The problem we have is we break things, usually wheels, but I have broken several saddles, too. Usually the rails break.

I've been happy with some of the Selle Italia saddles I've had. Saddles come in different widths and you can measure your sit bones to see how wide they are. Some stores have a tool for this, called an assometer or something. You can sit on soft cardboard and measure the impression left by your sit bones. Or you can try different widths and see what feels right.

I also like a cut-out or relief channel in the center. Some people who use hard leather saddles, like Brooks, will cut their own relief in the leather.

Losing weight will mean less pressure on the seat but your sit bones will still be in the same place. Practice keeping your weight on them and off soft tissue.

And more money won't necessarily get more comfort. I've had cheap saddles on my mountain bike which were very comfortable (but fell apart) and expensive road saddles I couldn't stand.