I have the ION for 3 seasons ( 20 days a season ) and they arent as stiff as they say in the burton site.
I tried the kaiju at a store and walked about 10 minutes... They seem similar in flex , and the kaiju were super confy... like a glove.
I use 10.5 ions but i think i can use 10. the kaiju were 10
hoping to get kaiju to try yhem and sell the ion. Just because i like tradicional laces