If it ain't broke, don't fix it, if you have something that works, stay with it.
From experience, what works for others may or may not work for you and unfortunately you won't know until after the purchase is made.
After a couple years of research and reading others experiences here I decided to go with the Dalbello Gold Powerwraps (which everyone seemed to be ecstatic with) to replace my (what I felt were packed out) stock liners in a pair of Head Stratos.
I purchased and had them fitted & molded by a reputable fitter and thought I was 'good to go'. Wore them around the house (pre-season) for break in as you mentioned, and thought they 'didn't feel quite right', but would probably be OK.
The first day I rode in them my feet were never so miserable. The second day I made some shims out of moleskin that helped, but still not right. The third day I had to take a day off and see a local bootfitter where I was riding, whom after trying a few things ended up punching out the boots in problem area. They felt better, but still 'not right'.
Luckily I had brought along my stock (packed out Head liners) so I put them in the boots and rode the last 6 days of my visit with no problems.
I paid good money for a quality liner but they ended up being miserable 'for me'.
I plan to go back to place of purchase and have them re-molded (since boots are now punched out) and hopefully they will work out better.
Moral to the story, "If it ain't broke, don't fix it".
If I had it to do over again, I'd try to find a pair of stock Head liners that I know worked for me.