I totally agree with you both. I have a hard time seeing sasuke as true good because he is obviously always thinking about himself and his family over anything. His judgment is clouded by his strong feelings for them both. So him truly turning good and not seeing the benefit to mass amounts of people being killed over himself and family, is hard for me to believe. Especially after all of the innocents he has killed and the way hes been acting since he left konoha. I think the exact same about orochimaru. If it benefits his quest in some way, he will do it. They both do not want to be put under massive genjutsu and have no value for human life (unless it is the lives of ones they love). Whether he is reviving tsunade, or hiding in the shadows watching near the battlefield, where ever he is, his intensions are not pure good. It may seem like they both have turned, but i dont buy it (at least orochimaru). Deep in my heart, I want sasuke to be good, and orochimaru, but I have a hard time believing it =D