I just thought I'd share this - we've just finished a seven day trek climbing to the summit of Kilimanjaro followed by an eight day tented tour of the northern parks including Arusha National Park, Tarangire NP, Lake Manyara NP, Ngorongoro Conservation Area, Serengeti NP and Lake Natron. Anyone who tells you that you need to rich to do this has no idea - we've done it on the cheap and it's been superb. Probably our best holiday ever. Tanzania is now my favorite destination. If anyone wants more details, please PM me.