A number of friends have done the seat route. One issue is that if you want heated water, you need electrical close enough to plug in (or a hot water line, even more problematic in most cases). So, for our bathrooms that means some fairly extensive work to get a receptacle where needed. And, good ones are not cheap.

This is the one that my friends have settled on: https://smile.amazon.com/dp/B018F18TIK