Best Dojutsu user in different forms?

[YellowFang]

Kakashi
Itachi/Obito
Madara
Nagato
(Just don't know how to rate Byakugan users because we have seen two completely separate styles...)
But in classic,
Neji

 

[Lord Seventh Hokage]

Kakashi - Copy Ninja Kakashi
Itachi - Amaterasu, Tsukuyomi, Yata Mirror and Totsuka blade.
Madara - Perfect Susanoo
Nagato - Mastered Six paths technique and other unique abilities
Kaguya - Probably the first character to possess the Byakugan

This ^^^

 

[Xāvî1]

Kakashi/ Sasuke
Itachi/ Obito
Madara / Sasuke
Nagato / Madara
Neji

 

[Omar19992010]

3T: Madara
MS: Obito
EMS: Madara
Rinnegan: Hagoromo
Byakugan: Kaguya