Buy these if you fit a 9.5US street shoe and plane on using them for general mountaineering. All the sizing info you need is here: http://whittakermountaineering.blogspot.com/2008/02/plastic-mountaineering-boots.html
I needed to go down a size, and couldn't return my boots, so I bought used ones from Whittaker as a replacement. The nearly-new boots are thus for sale. $90 shipped, a screaming deal.
Here are some shots of the boots I'm selling (black para-cord laces) compared to the ...