Re: Pretty Much Safe To Say That Madara...
Dude, you can't rationalize on this matter. Nor can you tell who is more trustworthy. Itachi wanted to paint a hateful image of Madara. And he wanted Madara to be his idol. That is why he said, Madara stole his younger brothers eyes. Just like Itachi would steal Sasukes eyes. So it was just to make Sasuke dislike / distrust Madara, if he ever met him.
So no it's not safe to say till the manga shows, what really happened.
Also you say that Obito has lied a lot, well wake up bro, Itachi lied the most in the entire manga, though for different purposes. Everything he said till he was revived in edo tensei, can't be trusted...
And even in edo tensei form, he was still abiding by the will of KA to protect Konoha..
Itachi only knew, what the Uchiha clan said about Madara, when he left the village. This is what Obito corrected, since the other uchihas were mad at him, since he wanted to leave the village, they twisted the story. So Itachi would only know this rumor, which Obito put doubt upon.