I think they are very different discs and could see carring both. I carry a x xs which I would say is similar to a leo and I use it alot for tunel and low ceiling shots. the rr is for big turnover and monster hyzer flips. one of the longest throws i have ever had was with an echo star rr.
Sole, Summit, ridge, vp, ibex, obex, trak, ascent, unlace, lace, olace, solace,
i have seen monkey sh!t fights at the zoo more orginized then this.