"so looking for something more turny and fun for couloirs and such. These seemed very popular over here for that.
Would mount them with warden 13s"
I skied both the 186 and 179 before buying the 179. For me I found the 185 to be a bit slow (6' , 160lbs). The 179 is quicker, floats well and is stable at speed. To me the trade off of the gained quickness for a slight loss of high speed stability was worth it.