In reply to Bhealey:
Hi Ben
The scarpa boot you mention will be fine as long as they fit,
http://www.ukclimbing.com/gear/news.php?id=6595
Suggest you have a short list of boots and go and try them on, preferable in the same shop. La sportIva nepal extremes are also popular https:// www.needlesports.com/Catalogue/Footwear/Mountain-Boots/Nepal-Extreme-SPO-NTE#.VP1XhJseLMI
Also take your crampons along to check they fit, if you have none its best to try a pair at the shop so you know what fits.
Theres no short cut to finding a good boot that you may have to wear for 15 hours apart from trying a few pairs on and seeing what fits.
Cheers Davey
Post edited at 08:24