I have been considering new boots for some time. Almost got the Kneissl version. Then heard about the Full Tilts. But I felt like my Flexons were holding up ok, and pretty comfortable.
But I pulled the trigger last weekend. Bought a Bumble Bee with the Intuition liners. Heat formed at the shop (Cal Ski in Berkeley, CA -- good folks) and now wearing them at home after the 24hr curing period to try them out. I decided to see how they compare to my old Flexons, which, as I said, I felt fit well and were comfortable. But putting them on after wearing the ones with the Intuitions, well, it's an unfair comparison. I can't believe I thought my Flexons were comfortable! Reused my old Peterson insoles; fit perfectly.
So I'm a convert. Haven't skied them as yet, but the fit of the inner boot is 100% better than before, and since the shell is the same, it all fits my foot very well; should ski great!
I noticed a few construction differences between the Full Tilt and Flexon: one is that the lower bail on the Flexons is encased in a tough outer wire wrap, whereas the Full Tilt just has the basic vinyl tubing. This is somewhat important because the lower bail is potentially subject to contact with the ski edge and its associated cutting ability. We'll see how it works out. Another difference is almost certainly to save manufacturing cost. The tongue is hot melt pressed into the hinge mechanism on the Full Tilt, whereas on the Flexon, it is a metal flange connection, much more durable. But this is a relatively low stress area, so probably should be ok. Finally, the buckle housings are screwed in on the Full Tilt, rather than riveted, which seems good for replacement capability.
I did try the Krypton Pros at the shop. The fit is indeed different. The Dalbellos are narrower in the toebox, and also narrower just aft of the arch (on the outside), but have a wider heel. A strange foot shape, it seems to me, but they have a lot of fans, so I guess they fit people.