Personally, I don't buy the dissenters argument in total-- but I do think they make some good arguments (anti-viral drugs can be as or more toxic than just HIV, HIV in Africa is grossly overestimated for political reasons, etc.).
It's also clear that heterosexual AIDS is largely a myth. My uncle died of AIDS in 1991 after receiving HIV in a 1984 blood transplant. My aunt is alive and still healthy and HIV-free today. Though I really don't care to delve into my relatives sex life, the fact that so few wives of HIV-positive men get HIV suggests how hard it is to transmit vaginally. The stats I've heard are 1-1000 man-woman, and 1-8000 woman-man.