Sage mode can be included.
I say madara. From what i've seen his taijutu skills even surpass guy.
Are you being extremely serious with that kind of answer? Madara? People like Guy, Kimimaro, Tsunade and A would trash him in a taijutsu battle (leaving EMS, Rinnegan, Mokuton and regeneration aside).
Madara's only taijutsu feats are in chapter 560. Any top tier ninja like Gai can do what Madara did to those shinobi.
Seriously, Hirudora would have killed or left Madara unconscious if he wasn't edo.
LOL at Madara being better at Taijutsu than Guy. Hold you Madara fanboyism, dude. Guy is the best at Taijutsu currently, he alone demolished Madara's incomplete Susano'o with Afternoon Tigger where the Kage have to team up to crack it. He may be slower than Raikage and weaker than Tsunade in strength but he make up for it with his skills and the power of youth!
Lmao Gai would trash Madara in a Taijutsu only battle. Gai is the best Taijutsu user in the series. Dude is boss.
Until we see Gai undress, we will never know if he actually wears ankle weights or not.