Anton Korobov seems to be doing fine in the 7.Qe2 lines, how exactly is Black under pressure?

I wouldn't know if "7.Bc4 is the test" (though that's how I learned it decades ago -- think Spassky-Petrosian) ...but skipping to the latest thing I'm aware of, CBM 174 (Igor Stohl) apparently prefers 7. Qe2, and sees Black as "under pressure."

@Zatara

1. No, both moves are fine, just play the normal theoretical moves.

2. 6...Ng4 is the easiest to learn but you have to be ready to repeat, yes. It's a matter of taste, 6...e5 has more theory but also more ways to avoid particularly forcing play. For instance, 7.Nb3 Be6 8.f3 h5 has a pretty solid reputation, not sure why it hasn't been seen more of late.

Hi Martin C,
Yes your probably right with f4 e5!!  I was probably exaggerating a bit!  Qc7 maybe good practically as white may have an attack with e5 more so then Qc7?   
AND Bg5 that most won't prepare just to draw!! 
Thank you!,
Marc 

Thank you for your reply Kyleimeister!! 
Yes King makes 6...e5  look like an error with some games and comments, so he suggests Qc7 with a dragon structure.   
As far as the  Be3 line Tony Kosten in his book on the Najdorf brought up the draw with be3 Bc1 ect.  Also white can play f3 first but I guess Qb6 is good?   
Finally what do you suggest vs Bg5?   
Thanks,
Zatara

Hi All,
What to play as Black vs 6.Bg5 in Najdorf?  I am thinking 6...e6 7f4 Qc7!?  Richard Palliser in his book on Najdorf said this is a good winning try for Black. I would rather not have "forced draws"  so maybe poisoned pawn gone.   

Also, two more questions:
1. after 6.f4 is 6....e5 really as dangerous as Daniel King makes it out?  Is 6...Qc7 really that important to play?
2. After 6.Be3 I guess e5 is most practical?  e6 leads to Pereni  attack and all those Shevy lines, But what about Ng4?  or is Bg1 Nf6 ect a forced draw?   
Thank you,
Marc