In my not so expert opinion (though I have logged close to 30 days in these boots), the Salomon X Pro 120 is the perfect all mountain Freeride boot. It's stiff enough for big guys like me to charge, but it is incredibly comfortable. The liner offers an incredible range of last fits, from 100 up to around 106. This is simply the best boot I have ever owned. The fit and control match in a way I didn't think was possible in ski boots.
The only negative (if you can qualify this as a negative) is that it will require a little time with your bootfitter to get it totally dialed. Out of the box the arch was in the wrong spot for me, a simple fix with a new molded footbed.