I always use DMC because I find that it lays better and frays less than Anchor. I think some of it depends on where you live (re the cost) and the size of the project youre doing. Some of it is also just personal preference, so if one just works better for you, Id say to just stick with it.
I used to always use Anchor for 310 because it covered better. I use mostly DMC but I am replacing my DMC with CXC as the are used up. The price is better and the quality is as good if not better.