That girls do tend to have more patience for slow storylines while men usually go "GODDAMNIT KISHIMOTO HURRY IT UP!!!". Or maybe that's me being... misoginist?
And yeah, Sasuke and Sai aren't so alike... well, they have black hair and dislike Naruto or act as if they do, and they are distant, but Sasuke opted for the no speaking/glaring at people and inanimated objects approach, while Sai opts for the "commenting on the size of your penis".
It seems he kinda wants to open up... I can imagine Danzo told him not to speak of anyone of his "condition" and yet he's already explaining Sakura how he can't really feel anything and how his Precious Something (TradeMark Kishimoto 2005) is a picture that belonged to his brother.
Stupid Naruto had to interrupt, but then again its too early to explain Sai.
I'm equally curious about Yamato. I like him! He can create a house out of nothing, really! And I'd like to see whether he can pull Sasori correctly, but it seems the next episode wont reach that far.