Inevitably comparisons to WOK cannot be avoided, and on that level WOK still comes out on top for me (being an long time fan of the old trek though I was more invested in the original cast for that one). Kirk's final moments with Spock in WOK trump the reversal scenes in this one for me, and that brief choke on his words at Spock's funeral still move me (I'd say that was some of Shatner's finest acting in the part).
That being said on an entertainment level this one never lets up, the action is superbly staged, Alice Eve in underwear is never unwelcome, I loved the way Khan got tricked into blowing his own ship to hell (though I saw that coming a mile off), and I didn't even mind McCoys hallelujah moment with the very convenient timing of the revived tribble.
My only gripe, and this just for continuities sake, so I'd consider it no more than a nit-pick, is they could have thrown in some explanation for the dramatic change in appearance of Khan. Having gone for reasonable/passable lookalikes for other major roles, going against for Khan (without explanation) was a little annoying.
But like I said, I enjoyed it thoroughly. WOK still remains my personal favorite Trek movie, but this one isn't far off.