I've been through the whole gamut of boots for very fat (104) feet, with various protrusions thrown in just for fun.
So...... Vacuums - COLD, like REALLY cold. I used boot gloves and Therm-ic 1200's, and they were still COLD. Daleboot - OLD moulds - after I saw them I was done.
So today, I'm in a pair of Nordica Cruise 110 (3 pairs in various locations). Initially I got them at Surefoot for a birthday present to myself. They did a very good job of fitting me, but even them, the heel pocket was too large. I visited my son at Aspen this winter and brought another pair that I put some old intuitions that I had in my Atomic Live Fits. OMG, they fit great, and they were warm!
Back in SLC, got back into the Surefoots, and again we had to do some work. Up to WB (second Surefoot pair) and after a day of being cold, I walked into Fanatyko and they put some Intuition Powerwraps in them - complete bliss. Now I have 2 pairs of $400 liners sitting around looking at me.
Answer to question - get a good fitting shell and some Intuitions.