For fast purling, I can only recommend looking into Portuguese style knitting. It's actually easier than the knit stitch. Check out Andrea Wong's demo of both stitches on you tube here.
justcharlotte on Ravelry
to catch up on my knitting after my HS reunion weekend
“Properly practiced, knitting soothes the troubled spirit, and it doesn't hurt the untroubled spirit either.”
― Elizabeth Zimmerman