@pregom The ION, ION-S and NRG R1 are all top of the line skis. The EVO/EVO-S is also a top of the line ski, it's just the model that got replaced by the ION and ION-S.
Freddie used to use the 66" NRG R1 and now he uses the 67" ION.
Nate used to use the 67" EVO and now he uses the 67" ION-S but with the red ION graphics.