I'm looking for some field use feedback (stiffness, comfort, warmth, tourability) on this Scrapa model.... I'm a 49 yo 170 lb 5' 9" AT type who I would consider an expert lift ski and a conservatively advanced B.C. skier. I'm looking for a "bigger" boot to drive fatter skis in Cacade type snow conditions. Initially these would be paired with 170 cm BD Mira's and Fritchi bindings. The other question is shell sizing... I have a med low volume type foot structure and I typically go with a 7.5/8.0 depending the manufactures last. I'm presently using Lowa Struktura's (green/silver) mondo shell size 25.5. Thanks in adance for your feedback and insight.