who is stronger chaptin yamamoto of izen?

As we have seen in the manga Yamamoto is stronger, Aizen had to create an Arrancar just to negate his Shikai. So if it came down to it Yamamoto would win. Even Aizen openly acknowledges Yamamoto's power being greatly superior to his own. Yamamoto states that the reason why he has been able to serve as the Captain-Commander of the Gotei 13 for 1,000 years is because there hasn't been a Shinigami stronger than him born in the past thousand years

Isnt it obvious??? yamamoto sou-taicho (captain commander) of course!!! aizen's pretty weak ya know...

I'd say Aizen. But, Aizen's strong in the form that he has meer of an advantage over Yamamoto. With Kyoka Suigetsu and all. But, I'd also have to say that Yamamoto is strong too.

I honestly have to admit, I don't know if it counts to shinigamis but Yamamoto is really old and I would think that age would it's job too

aizen all the way. he still has his banki and hollowfication still.

1. It's captain not chaptin 2. It's Aizen not Izen 3. Of course! Yamamoto's stronger than Aizen!