Double cast on vs knit on casting

In My Humble Opinion...
The techniques are demonstrated very well on this site: http://www.knittinghelp.com/knitting/basic_techniques/index.php

Double cast on
Pro...
-it's straight forward and so relatively easy to learn.
-it creates a nice edge.
-it is easy to rip back (frog): simply take stitches off of your needle. Then pull on the tail and working yarn.
Con...
-once you run out of tail that's it you can't add anymore stitches.

Knit on Casting
Pro...
-you don't have to worry about the tail. You can add as many stitches as you have working yarn.
-it creates a nice edge.
Con...
-it is tricky to learn. You cast on using not one but two needles. Further, you need to know how to perform the knit stitch before you can use this technique.
-it is tricky to rip back (frog). I have had to actually cut off a length of yarn to rid myself of stitches.

I was recently quoted in Chatelaine.com
Amy Baskin's article is: Yarn and Yak

Next post: A song in celebration of casting on.
Apologizes to songwriters everywhere.