personally I love the vocals they went with on the B-side. The youtube version above is I think closer to what Stevie wanted her vocals to be-- more upfront in the mix (they way she would eventually get them on her solo albums). She's a bit more blended in the mix on the single version and they went with a little less of the rocking edge vocals at the end (they are woven in with the softer vocal take as well). So this is interesting coz I think it's more what she would have wanted but wasn't powerful enough in the band to demand at the time, and the released version is closer to what the producers (including Lindsey) envisioned for her voice.
That said, I do like the released one better.