Sorry but that statement has me a little confused. No sarcasm intended, but "they are the most comfortable boots you've owned, and thay hurt???
How r they hurting you? What about their fit do you think is causing that? I understand the point you made about the cost on top of the cost of the boot. I think that's a valid point if we are talking new boots. That may not be the most practical solution in that situation.
My point was for the price of a pair of "on sale boots,.". (Which never seem to be available in my size.). You can renew and extend the life of your old, much loved and ridden boots.
basically, these are the most comfortable boots out of all of the pairs that I have owned - BUT, that being said, I have never had a day of snowboarding where I wasn't in almost constant foot pain. The Libertines are worlds better than, say, the Vans boots i had before (fit wise, for me personally), but they are still far from perfect.
I have very wide, very flat feet. They get significantly wider as I put pressure on my feet.. what generally tends to happen is that my boots are too tight across the ball of my foot, leading me to try to keep it loose down there, which normally also makes the rest of my foot really loose in my boot. If I tighten them, I am guaranteed pain.. usually the first 2 runs are brutal, then it calms down to a dull ache,and then after lunch usually starts to hurt again. Sometimes it is just across the ball of my foot (the widest part), and sometimes it is also in my arch, especially when really cranking down on my toe edge (which i ride on more often than my heels.) I have tried a bunch of different insoles (never Remind, mostly from local shops and stuff) with the same result - they generally hurt MORE because people that are selling this shit dont understand that I dont want an insole to FIX my flat foot but something that will mold to the shape my foot ALREADY is and make it comfortable. I cant snowboard with some massive arched insole trying to fix my flat feet.
TL;DR - my boots are comfier than any others ive had, but they still hurt 99% of the time.