I have one, and have an EFX wedge, and SOLD my EFX Luke ESB when the RS came...
The RS is more accurate in every way. Size is more accurate, construction is more accurate, etc. The EFX being larger fits on your head better, but the RS is still wearable.
The only thing that can be improved on the RS is paint. While good, if you want EXACTLY accurate, you're gonna have to touch it up yourself.