Right on bucko.
The spark is virtually the same EXACT boot as the beast 10, with a rivet in the back that really doesnt change how stiff it is in all reality, and has a similar, yet not as massively comfortable as the ignition. It has a narrower powerstrap.
the Ignition is a WEE bit stiffer than the beast 10, has a kick to the fucking ass liner, and delivers the best vibration absorbtion of any boot i've ever skied with. sick sick boot. really veristile on its fit.
the enforcer and the blower are both more like the hot rod boot of old...