I was up there in June and used Chiefs Tours for our group of 10. They did what was expected and were very reliable. We also used them for a safari afterwards. Ask for Adidas when you contact them. www.chiefstours.com
Hey!! I highly recommend Sean Wisedale, he was South Africa's first person to reach the 7 summits. I met him on Aconcagua as he was guiding others, and then met up with him again in Santiago after he led another group up Ojos del Salado. Although he travels doing other important summits, Kilimanjaro is what he does most. I just talked to him after he did a successful expedition up Kili about a month back. Really great guy, too!