correct me if im wrong, but the pods most LFS sell are the swiming type of pods, and even if they are the the crawling type, you would have to keep buying them weakly as this constitutes practically 100% of the diet of a dragonette... i actually got into saltwater because i wanted to keep dragonettes and had to upgrade to a 60g cube, with a 60g refugium/sump and a HOB refigium, and now i have 3, wich are fat and happy... so i vote for the six line, besides they are amazing fish, very colorfull and have been known to take on bristtle worms...
though be carefull because i have seen that they tend to stalk fish added after them...