Hi-End carts - pros

When looking at the field of high end carts, IMO there are no outright "bad" sounding ones, just that each cart has its own characteristics. I am looking at acquiring one of these below. If you had to select one from one of the following, which would you choose and why?

a) Koetsu RSP
b) Lyra Skala
c) Dynavector XV-1s