i have a soft boot. very soft. i ski park regulary, but out west in the bowls they are fine. you just have to put more pressure onto them to get the results you want. but unless you are a complete pussy, it isnt exactly hard.
^some boots are freeride boots so techincally there better.. but basically if you ski park.. then you want a softer boot... so if your a big person you wood want sumthing mid stiffness.. but if your really light you wood want something super soft... also its very important that a boot fits you correctly... there isnt really such thing as a BEST BOOT... its more personal preference.
These are the best boots I have ever ridden. They have a nice, forgiving flex, and they are incredible for jibbing. They have padded insoles and a shock absorber under the heel. Unlike old Lange boots, you don't need feet shaped like popsicle sticks to fit. The new "medium" last accomodates a wide range of foot types. Also, they are very light. I read one review that said they were like Ferraris for your feet. That reviewer was absolutley right. Every component on these boots works perfectly (the buckles, even when torqued way down, open as easily as a car door.) BUY THESE BOOTS.
P.S. If you are on the heavier side, go for the Comp 120 FRs. Basically the same boot with a stiffer flex (i.e. more like a race flex.)
The best boot is the one that fits YOU best. Its been said so many times... Seriously, boots are boots...
That being said, my favourites, and the ones that have never ever given me shin or toe bang are the Lange Banshee 110.