I have recently just swapped out the seat on my rig with the XL-RS. I was previously using an NRG prisma which in itself had no issues, but I found the bucket style seat would cause my left leg / lower back pain over longer sessions with heavy breaking. I attributed this primarily to binding in the hip area. If you are a big and tall sim racer you know seating options can be a bit limited. I race pretty much exclusively high downforce cars with my HE sprints at around 45kilo. I can happily recommend this awesome seat which I find exceptionally comfortable and very spacious. I am no longer experiencing any issues after 2-3 hour sessions. Thanks GT Omega!