I visited few ski shops yesterday trying to see what will be my next boot. Was shell-fitted and it came out to be 25-25.5 shell ( my street shoe size is US8).
I was inclining towards the RX series although not converged on the flex. So I started with the RX100. The fit was very nice, snug, no pressure points, even pressure distribution along the tongue. I spent about 20min in this boot and nothing caused any discomfort.
Surprisingly the guy who was helping me said that I'll get the same boot even if i go to the last year's Fluid boot of the same flex (of course about 2x cheaper than RX). By the look the Fluid's shell didn't seem to be the same to me - visibly larger forward lean angle and deeper heel pocket. Nevertheless I tried 25.5 Fluid9 and found it much less comfortable with pressure around the sixth toe and noticed that the tongue is causing some shin pain. The guy of course tells me that with some magic the boot will have painless fit.
Here comes the ~$250 question - who should I listen to? My thought is - the boots are not the same, there is definitely a difference both in the shell and in the liner. RX is the way to go if it fits better out of the box. I understand that the boot fitter can make wonders - stretch there and punch here - but is it really worth to go through this?
I should add that during that day i tried Dalbello Krypton Cross, Atomic Hawx 90, Fischer Soma 110 and two mentioned above.