FWIW my wife has a history of back problems and hates the sports seats. It’s the primary reason we will be trading out of the S6. One thing worth mentioning is her problems are mostly with the aggressive bolstering being to high for her relative short height (5’5). Best advice is take one on an extended test drive, mainly because on the initial short drive she hasn’t noticed the problems and they are more profound after 30+ min drives. I for one learnt the lesson of taking extended test drives and have rented multiple cars for multiple days to make sure the seats are comfortable in a future car we’ll be buying. One way of renting more exclusive vehicles is the Turo app.