I've ridden the Cirro for the last 4 years. When they brought out the double BOA 3 years ago it improved it drastically.
This is the stiffest softboot I can find. Comforatable.....a week to pack out the toes, and they hold their stiffness for about 40 days of hard riding. I've tried the Malamutes form Salomon and DriverX's from Burton but the BOA means you can really keep em stiff. I where them tight, ream them extra tight for when I'm strapped in and then just pop the knob when I get to a chair or change to touring mode. When you tighten them the tongue is just BOA cable and 3 stiff plastic pieces.....far stiffer than laces.
They are far from perfect though......the lace on the upper BOA may be longer than it needs to be and if you ream them extra tight the BOA may get stuck, or in my most recent case, tighten the coiler so much lace that it popped the housing right off.
I'm sending this pair back, getting another, and replacing the BOA laces with a smaller length one I have on warranty from BOA. For the average user I don't think this will be a problem but be aware.. I love them I just wish the BOA was more dureable