Don, after a bit of tuning, I found the S-950 VH nearly as good as my TC Helicon Harmony M, and equally as good as my Digitech VR. Keep in mind, however, that it does take a bit of tuning to get the built in VH to sound good with your voice. Additionally, as Uncle Dave and DNJ will tell you, there's a real skill to singing with ANY VH system. It does require some practice to get it to sound great.
Cheers,
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)