After our conversation about Radial vs Sliding Mitre for the fret slotting setup, I was in a local store today picking up some other stuff and asked the guy to keep out an eye for a decent radial, he said he had one out the back that keeps getting in his way.
It's now mine. Dewalt, size is a bit overkill for fret slots, but it's a way better rig. I pick it up tomorrow as he has to put a new power lead on it, the existing one is split, but I was still able to test etc.
So if that locks in your Radial Vs Sliding Mitre concerns, I have put my money where my mouth is!