Sanderxpander
I got extremely confused for ten minutes, when I gave up and watched a tutorial. Now I'm really happy with jt and couldn't imagine going back.

Same experience here, except got confused for an hour then read the documentation 

Well I'm definitely looking forward to using it in the future. I'll check out the videos before starting my next project that includes vocals.

I want the option to remove certain things from the Smart Tool, such as Fast Comping. When the Take Lanes are set to a fairly low height, it's hard to get the Selector cursor to show up vs the Fast Comp cursor. I have to expand the height of the Lane to select in most cases. Sometimes the Smart Tool can be just a bit too smart. I'd like to see a way to select/deselect what other tools the Smart Tool can utilize. 

Grem
I used the comping feature last night on an old song that I was doing a redo of the vocals. It was stared in Sonar 8, vocals redid in X2, and now working with it in X3.

I have to say that the comping feature is just a work of art. Once you get use to it, learn the key commands, it's just a joy to work with.

And once I had my choices selected, I was able to use Melodyne to correct some notes very easily.

X3 rocks

Wow! This is a breath of fresh air.  When one considers all the angst that has been written about the loss of layers reading this is down right awesome. Thank you for sharing your experience. 

+1 on the comping feature - it makes it far quicker and easier to fly through comping a vocal track.  Love it.

So nice for reviewing too - "yeah that one sentence isn't so great" - "oh ok I'll take one from this take, then it will sound like [clickdrag] this, see?"
Combined with Melodyne it has made my life easier, and left my clients not just happy but severely impressed with mah skillz.