Itachi is the only Uchiha worthy of respect.
Obito's reasons for becoming evil: "My girlfriend (she wasn't his girlfriend just a friend who happened to be a girl who never look at him twice except when he died, LOL! Cruel irony) was killed by my best friend who promised to protect her and now I'm Madara's bitch boy so I can put the whole world into an Infinite genjutsu, cause my feewings are hurt"...
Madara's reason for being evil: My clan forced my hand into signing a peace treaty with the Senjus because it was pointless, but I wanted to continue to fight so I took my brother's eyes and challenged the head of the Senju to a duel (and lost) so I left to come up with some hair brained scheme to make everyone think I awakened the Rin'negan (even though Rikudo Sennin only developed it from being the host of the Juubi and therefore no Uchiha or Senju for that matter can awaken something that is not truly a part of their diluted genetic make up because that's not how traits are passed on, duh) and then I'm going to awaken the Juubi so I can be it's host and place everyone in an Infinite Tsukuyomi so that I may be finally look on as a god"
Itachi's reason for the Uchiha massacre: "Them bitches was cray, dawg. Them bitches was cray"
Itachi also didn't have to use Senju DNA, a stolen Rin'negan (If he awakened it why not use Obito or some other Uchiha to revive him forth with? Why the long wait of nearly 50 ****ing years? And why bother "implanting them into Nagato? And if he did implant them why not get Nagato to bring him back forth with?), didn't need a curse mark at any level, wasn't taught by a Sannin, didn't need to absorb said Sannins powers, didn't kill his closest companion to obtain MS (he saw Shishui's death but that doesn't mean he caused it. Shishui died i=of a suicide), was dying of a deadly disease that made him much frailer than he would have been at 100% and still he made Sasuke use all of his chakra, he didn't need to be reconstructed with silly puddy, I mean Hashi's DNA, nor did he do anything for selfish reasons, but for noble ones.
And he was strong all on his own, with no ridiculous power ups. Itachi is waaaaayy stronger than Obito and Sasuke.