Angular Bathtubs - e.g. Duravit Starck 3

[LovedayTietjens]

I would like to ask if anyone has an angular bathtub, with a rectangular base and straight lines throughout (as opposed to the traditional more rounded shapes). Picture attached. Can you comment on the comfort level - is it less comfy than a rounded one, no difference, or more comfortable? We are getting Starck 3 for our new house and the builders have recommended getting a 'normal' tub as they find the angles of this one too rigid.