09 spk pro has a rubber toe box ie no toe bang. I have the 08 kaos and am pretty stoked with them, comfiest boot I have ever had. they pack out a bit so I added some extra boot foam to tighten them up and a custom footbed. Otherwise though they are sick. No heel pain, shin bang or bang on the back of the calfs. Not as precise as a four buckle boot and not quite as good on ice as others but the comfort makes up for it.
If they fit your foot go for it.I wear a 10/11 US street shoe and ski in a 26, make sure to get the right size.