I'm in love with my Knitpicks needles! My thoughts about the Options set is pretty much what others have written. Love the sharp needle tips, love the slippery metal, love the super-flexible cables, etc. The screw-in connection can be a bit fiddly, but overall I like these connections better than the ones on my Denise set. They seem more secure. Organization is pretty easy too. I just used a Sharpie to mark the needle & cable sizes on the outsides of the zippered pouches.
I did also buy all the DPNs, and I really like them. They're nice and sharp and slippery, like the interchangeable needles. Plus, they're fairly lightweight, although I think they have a nice heft to them. If you like metal DPNs, you'll probably like these.
I just ordered the set based on those lovely pointy tips (haven't received them yet). I love slippery metal needles, but Addis are too blunt for me. The Knitpicks needles definitely can be used for magic loop. For the interchangeables, they sell cables in 40", 47", and 60" lengths. The fixed circulars (sizes 0, 1, 2, 3) only go up to 32", so those that prefer at least 40" for ML might be disappointed.
Also, Denise sells 40" and 52" cords, so those needles can be used for ML as well if the thick cord doesn't bother you.
Cotton thread sizes are designated by number. The finer the thread, the higher the number. For example, size 5 thread is thicker than size 10, and size 10 is thicker than size 20. Sizes 5, 10, 20, and 30 are the most common threads used for crochet, although of course you can use as fine a thread as you dare! Sewing thread is around size 50, and tatters often use sizes 70, 80, and even 100.
I love the cable cast on, although I had trouble with it in the beginning too. A crochet hook instead of the right hand needle works well, but I don't normally bother with it. I discovered a technique that makes the cable cast on easy to do with two needles. When I snug up the newly cast on stitch on the left hand needle, I hold my right hand needle underneath the left as I snug the stitch. The right hand needle is between the previously cast on stitch and the newly cast on stitch. Doing this ensures that the newly cast on stitch isn't too tight, and my right hand needle is already in the correct place to knit on the next stitch. It's a little difficult to describe. I can post some photos if necessary.
This is my favorite cast on for socks! I think it looks so much nicer than the long tail cast on.
Also, this pattern is worked on the right side only. For most crocheters it means working every row from right to left, with the right side facing you (if you're a lefty you might crochet from left to right). That means cutting the yarn at the end of each row and joining the yarn at the beginning. All those yarn ends are normally worked into fringe. I'll bet that orignial afghan has fringe, right?
There are several published versions of this pattern out there, but for the life of me I can't find one at the moment. I hope another craftster can point one out for you.