In reply to BAdhoc:
IMO, socks make the most of a mountain boot. Invest in socks.
As for the boots, I've used a pair of LaSportiva Nepal (1st gen) for almost 20 years. This year I've bought a radically different model, SCARPA Ultra Rebel GTX. In my lifetime I'll probably buy another pair or two. Don't worry too much about the cost of the boots. Try as many as you can, and look for fit above anything else. I'm sure the Mont Blanc GTX is top notch construction and features wise. I love my Ultra Rebel GTX, which is a slimmed down incredibly light version of the Mont Blanc series. SCARPA does manufacture high quality boots across their entire range.
But really you should try them on before buying. Bring your crampons too. FYI, SCARPA usually works best with Petzl crampons. I had already Cassin crampons and they fit fine under my SCARPA boots, but they're not perfect.
Post edited at 09:54