I've seen a lot of speculation on where Sasuke and crew ended up, but I haven't seen this
Wherever they got to, it's someplace Sasuke knew well. Again, the only reason I make this is because I have seen almost nobody mention it.
Where would everyone say a full power Sasuke lies in this order of people?
(1) Obito
(2) Hiruzen
(3) Kakashi
(4) SM Naruto
(5) BM Naruto
(6) Full Power Orochimaru
(7) Madara
(8) Minato
Which one does he stop at, or has the closest fight against?