This is my first pair of Lange ski boots and I've been extremely satisfied with them. Last two pairs of boots were Tecnica and Full Tilt, and I've been much happier with the Langes over either of those.
I went with the low volume option because I'm looking for optimal performance, as well as the fact that I have a narrow foot. I also decided to go with the RX over RS, because I like having the rubber soles than can be replaced.
Features I love: the easy-to-use-with-mittens flexing buckles. The buckles have these spring loaded hinges in them that allow you to get your fingers underneath the buckle very easily - such a nice feature! I also love the powerstrap system. It's much like a booster strap, minus the elasticity. It could stand to be a little beefier, but it functions very well.

These boots drive a ski very well and are what you'd expect from Lange and their reputation. Great high performance boot with a nice, snug fit.

I will need to swap out the liners for some Intuitions pretty quickly. They seem to be packing out really quickly (I've got exactly 20 days on them). But, that's to be expected with stock liners these days.

Overall, I'm extremely pleased with these boots!

Updating this review halfway through the season. About me: 5'8, 190lbs, 27 y.o., fairly aggressive/athletic expert skier.

I bought these in a nice and snug 26.5 (I wear a 10 street shoe) for a performance fit, but have a low volume foot and very little arch, so I have no problem with the narrow last. In fact, now that I have broken it in a bit, my foot has turned out to be too low volume for Lange boots in general. Within the spectrum of low volume boots, Langes are often considered to be the more generous compared to the tighter fits from brands like Tecnica or Head. Good for someone who is in between a low or mid volume shell, but a little too loose for my foot. The liner is pretty damn good, but not as good as the stiffer and denser Lange liners found in the RS race boots. Stock liners have come a long way and anyone who tells you need Intuition or some other expensive aftermarket liner clearly hasn't spend a lot of time with different ski boots or has a weird foot of their own.

On the snow, they perform exactly as you would expect a Lange to. A true 130 flex; they start off a little soft but quickly engage and remain constant and stiff throughout the turn. Lateral stiffness allows for great response to and from your edges. Ultimately it comes down to fit because you really can't go wrong with the number of great options for all-mountain 130flex boots out there.