I have had about 5 different knives with S30V blades.
-Kershaw G10 Leek (just got it)
-Benchmade Ritter Grip
-Spyderco Lil' Temperance (I can't remember if this was S30V or 440V)
All of them have been flawless and performed like nothing else I've ever had.
I'm not sure why S30V has such mixed performance. My guess is maybe the heat treat.
Spyderco's S30V looks a little rougher to me than the Benchmade S30V but they both perform perfectly. I actually like the Spyderco S30V the best. However the jury is out on the S30V on my Kershaw Leek. I've just not been able to use it enough to do a good comparison yet. I plan to do a full review in a couple weeks.
I now prefer S30V over all other steels. I used to favor D2. For the price however I think VG-10 is hard to beat.