Spock's scream of KHHAAAANNNNNN!!!!!! had it's good and bad points:
Bad point: It did remind me more of Vader's "NOOOOOOOO!!!!" in Revenge of the Sith....but that is a minor gripe.
Good points: Even though, as a Vulcan, Spock should be more in control of his emotions, Spock is also half-human....and in an emotional moment, humans are not always very precise with our delivery of outbursts. Spock's scream came across as the very thing I speak of....an emotionally charged, imprecise delivery.....perfect!
Also, the crescendo of Spock's scream is punctuated by the raging sound of the Vengeance screaming past the Enterprise. (Screaming for Vengeance anyone?

) If you think about it, his scream being punctuated by the Vengeance's passing is about like Kirk's scream being punctuated by the music in TWOK.
On a different note: I'll take Quinto's Spock scream over Koenig's Chekov Scream anytime.
Now, as far Shatner's "KHHAAANNNNN!!!" scream in TWOK:
When I was a kid, I loved it! I was 12 years old at the time, and I thought: "Wow! I've never seen Kirk
this pissed!"
Even then, I can see where some folk would say: "This was a show put on for Khan." I completely agree with that statement. I
wouldn't say it is "generally accepted", but I completely agree that he did put it on to deceive Khan.
However, as an adult, I also tend to face palm in that scene because of Kirk's angry, Billy Idol-esque lip curl just before the classic scream. However, those two or three seconds
do not ruin the rest of the movie, just as Quinto's Spock scream
did not ruin STID for me. Nor did it seem to ruin the movie for the majority that enjoyed the film.
One of the funniest parodies I saw of that scene was in Family Guy. "We now return to Star Trek II: The Wrath of Khan, edited for sheep!"
KHAN: I shall leave you as you left me....as you left her. Marooned for all eternity in the center of a dead planet. Buried alive. Buried alive.
KIRK: (angry, Billy Idol-esque lip curl as his head twitches) BAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!





