[tatesgirl]

Oh thank you, but I want a 16" length. I'm asking which sizes I'm more likely to use?

It depends on what you'll be knitting and also your personal stitch. I, for instance, am what is known as a 'tight' knitter. I wanted size 2 because I like small things (anything) but my sock teacher corrected me to 2.75, two of which is okay, but someone here (on KP) said a tight knitter would create looser stitches by using one needle a size larger, which is absolutely correct in my case. I got myself a 3 to use with my 2.75 and I like the 'look' of my stitches more than before. Plus there's more 'give' to the fabric, which is important to socks.

Good luck, choosing!