The four of us were in Manaus from March 29 to March 31, 2008. We met Feliciano through the company we booked our trip through.
For the popular excursions in Manaus, for 80 to 90 rials/person, local hotels offer excursions to the Meeting of the Waters and the water lilies. These excursions are with a large group of tourists, on a slow boat. The tour is from 9am to 4pm. They offer zero flexibility and you're tied to the large impersonal group.
Feliciano organized our own trip for 4 of us. He rented a small, faster boat to the Meeting of the Waters, water lilies, AND an excursion into the flooded forest. Feliciano was willing to customize our tour. He also offered an excursion to the fish market in the city of Manaus. All of this was for 100 reals per person. It included boat rental and a tip for Feliciano.
He will be starting up his own excursion company soon. But if you want personal attention without the feeling of being on a cruise, I highly recommend him. I've listed his contact information below if you're interested:
Cell : 55-92-9196-3316
Home (night only) : 55-92-3638-2238