Graywolf wrote an answer about La Sportiva Makalu Mountaineering Boot - Men's on June 5, 2012
These are overkill for Kilimanjaro. I wore my Asolo Fugitive GTX boots on my trip,and was just a little cold for the first few hours of the summit day. Wear the most comfortable boots you have. My buddy wore running shoes every day except summit day, when he wore his old Rocky boots (similar to my boots, but much older).