The £427 I paid was for PS4, 225/40/18. Wow, £100 would've been quite a saving. Still not sure I would've gone for it, at least my wheels are unmarked!
The PS4s grip, traction and ride comfort are excellent. I'm not too sure about feel as yet, and I think I'm getting some tramlining. I'm going to drop the pressures to 36 to see if that improves things.