IMO the Opus i a fun ski but a little soft in the shovel for my tastes and the 178 skis kind of short. The Bibby is a much more well rounded ski. Stiffer overall but still fun in the trees and does a nice job on the frontside.
jrmagic...have you skied the Coax? ...I had a feeling the Opus might be a little soft in front compared with rest of the ski. Still thinking about the Coax. Maybe if I could zip out to Mt.Baker and demo.....LOL.