I don't know the answer to your question, although it would be a good thing to know!
I will tell you that we were EXTREMELY happy with Wilderness Safaris for our trip in May, and basically satisfied with Fish Eagle Tours as our agent. It seems kind of stupid, probably, but the one thing that I could 'complain' about with regard to Fish Eagle is that we didn't hear anything from Bert after we got home. It would seem to me that if you spend close to $20,000 on a trip, that the agent should call you after you got home and ask how it was?? We did hear back a couple of months later and he apologized for not calling when we got home.