I tried the HF8 and it does help with immersion, especially in VR. The one thing though I found is that after 15 min or so the HF8 became a little hard to sit on. I started to feel pressure points on the individual pads. I tried putting pillows on the pad and that helped, but now I had a gaming chair / HF8 / pillow sandwich and that made the chair really high and unstable, even at the lowest chair height. If this tech could be buried inside a gaming chair this would become a VR necessity.