and most of all, your feet. Personnaly, tecnica is the boot that have the best fit for my foot. Go to some shop and try a lot of boot, thats the only way to know wich one is the best... and for the stiffness, only you know what you need...
But are there a specific range of boots i should be looking at? I am mainly into park riding on an intermediate level, i ride rails can do anything from a 180 to a 720 and grabs off fairly large kickers. The problem i had this year was that i was bruising my feet on landing, by the 4th day of a 6 day ride my feet were in alot of pain not thru any fault of the boot. Is it my landing technique thats dodgy or do i need a specific type of boot?