I first ordered a set of the 5 DPNs but found that they were too small for my hands and the ends poked me in my palm too much while I was using them. I suggest if you have larger hands the 6 set as I found them to be much more comfortable. The ends are really sharp so if that is something you look for in a dpn you won't be disappointed. They also grip the yarn really well, I found that my stitches don't slip as much as the metal type dpns I first learned on. I don't have much experience using dpns so I can't compare these to other types but they work well for me as a beginning sock knitter.
I'm extremely happy with these needles. They're just as nice to use as my pricier ebony, rosewood, and blonde sock needles, and the fact that you can tell the size of a needle via its color is a huge plus. My only criticism is that when they first arrived the needles smelled funny -- probably because the plastic case smelled horrible -- but with airing and use this smell is wearing off.