Welcome to our forum.
I prefer a tub with both contour and bench seats. .
We tried both and for the small amount of time we were in them at the showroom, we were comfortable with either. I like the coziness of the contoured seats but I'm afraid that might get old after a few soaks. The bench would probably be easier for my kids for when they're moving around in the tub.
It is nice to have options.
Countour seats make it easier to bouce from station to station.