OMG yes it is confusing! I'm sure though after this first watercooling attempt it will all make much more sense. I am currently watching reviews/installation guides for the XSPC kit. I think that if I do go with for a starter kit, it will be this one. Simply because it is cheaper. But I am also starting to think of just making my own build piece by piece. Gonna do some more research.
its better to go for the best specially the tubing because it get really strong if its cheap quality.