I ran the RS14s on my old VXR220 and loved them, I'd also previously ran the 1144 on the car too but found them to be only mildly better than the OEM pads, and certainly not worth the halo praise that the VX community tended to give them. The RS14s on the other hand were (as I'm sure you know) utterly amazing, and I would definitely give them a go on the Zed.
For a combination of track/fast road use the Performance Friction discs + pads were my favourite setup on my old 350, along with the Endless fluid and the ubiquitous Goodridge lines. Never saw any fade regardless of track or temperature, although I'm not a particularly heavy braker especially on track.