have anyone heard of
Impact adventure (http://www.impactadventure.co.ke/ Kenya) / Maasai Wanderings (http://www.maasaiwanderings.com/ Tanzania)
Africa Journeys Escapes (www.africa-journeys.com Kenya + Tanzania)
i have received competitive quote from them, which is much lower than the rest of the tour operators i contacted with. so would like to know if anyone has any experience (good/bad) with these tour operators. thank you.