I have Audi A4 S-Line seats. They are a little narrow in the seat base for my big boned frame. But otherwise, have lots of adjustment and are great.
They also have an extension slide on the seat base. Great for those with long legs. Makes a huge difference to comfort and back support on a long drive.
I believe the comment above about Audi and VW seats being basically the same, (they share a lot of parts) but there is different versions for different spec vehicles, so not all equal.
Unless WRX seats are vastly superior to other Subaru seats, I'd pass. Any Subaru I've even been in, the seats strike me as flimsy, cheaply made, cheaply upholstered, and definitely not suited to a tall/large framed person