If i where you. LINE OPUS 186, 192 you can charge on Pow but then you can shred anything else,and not to forget they turn and play with you like mofo.
Shiro turning radius around 30 meters, you really need some big mountain with big lines, Shiros likes to ride you while OPUS you ride them snap on.
I had a chance to test SHIRO very nice ski but i will go OPUS any day.
Just my 2 cent's.