I might get the x-ray because of the swiss 7075 goodies and it's said to be the better handling than the rc18T.
Only thing is i hope rc18t or mini-t cvds will fit with a change of wheel bearings so i can fit touring car wheels.the x-ray cvds are keyed to the hexes(should be very strong though)so they're only compatible with the x-ray wheels.The lower shock ball studs are moulded into the arms and concern me a bit though.
M18T