Sit a group of sock knitters down in a room and I can spend ages marveling at our different techniques and materials. Basically we are all producing a circular tube of knitted fabric but very rarely are two knitters working the same way. Some are devoted DPNs fans (either using 4 or 5 needles), some love the tiny 30cm circular needles. Then we have magic loop devotees and those who prefer using two small circular needles. Of all the techniques I have tried the latter is the only one that I really can't embrace. For the others each has their time and place as far as I'm concerned.
My go to favourite is a toe up sock on an 80cm magic loop needle. But there are times when a small circular needle is very handy. I do a lot of knitting at my kids sporting events and in that situation I often just need to be able to drop my knitting to attend to a particular crisis or applaud as necessary. For these times magic loop can be a bit too fiddly and more times than I care to remember, a piece of sporting kit has caught on a loop and merrily removed half the cable from my stitches. A small circular needle has much less potential for accidents and as long as you remember to push the sticthes down on the needle a bit you are usually safe from accidental unravelling.
As I do a lot of travel knitting DPNs are probably my least favourite way to work socks - simply because of the potential for loss. More times than I care to admit I have managed to lose a DPN down the side of a train seat, or I have searched my knitting bag in vain. Knowing full well that I put 4 DPNs in there, only to find that, inexplicably 1 has disappeared en route.
Whatever your preferred technique it is always good to know how to employ an alternative method should the need arise - if only to confuse the non-knitting 'Muggles'.