WORST: early eighties Dynafit race boots (red and white) that truly did not fit and ANY boots that don't fit...AND Asolo plastic tele boots mid-nineties that hinged instead of flexed. What were they thinking? what was I thinking?
BEST (for me) DYNAFIT 3F Comp (not kidding), late eighties black and green. The adjustments were very tweakable: one could dial in lean anywhere between not much and extreme. By tightening the spring the flex could be fine tuned on the spectrum between way too soft and stiff as hell based on whatever metrics matter most (skis, terrain, temp, you). Cuff alignment and walk mode too. They fit me like a glove thanks largely to Paul Richelson, now in Plymouth NH. I could wear them all day for several days in Tuckerman. Best fit I ever had in 45+ years of skiing, would still be using them if the fluorescent green plastic had not shattered one buckle at a time nearly a decade ago. They lasted as long as they did because I was mostly tele skiing for the last twenty years. if someone has a pair in 26.0 drop me a line, really.
also Garmont Squadras (orange ones just like Ener-G) great fit due to thermo liners, med stiff 4 buckle tele boots sufficiently wide in the bellows
and...Scarpa Lasers, used in lieu of properly fitting alpine boots. With stiff Flexon tongue it performs like an alpine boot
as mentioned previously: it is all about fit