I demoed some Kendos in a 163 (only size avail at the time) at mammoth ca and it was the most fun I've had on skis in a while. They were quick and carved as well to me as my 9yr old in short or longer arcs.
off edge at speed, the tips did flap around a bit but once I got used to the metallic sound they made, the Kendo's just simply tore up the front side in a ear to ear grinning fashion.
Was going to look for a shorter radius gs cheater to replace the 9x but I think I'm going kendo instead.
I did not feel they had a speed limit for me but it obviously is not as dampened at speed like a race They cut thru crud very nicely and the short length worked well on steep moguls.
Question: Should I demo the 170, 177, 184 1st before I buy or will the longer lengths spoil a bit of the fun I had on the 163's?