I did a quick search on that V2Skim and you are quite right. They look EXACTLY like my Coralife Super Skimmer. I can tell you that the Coralife Super Skimmers get great reviews by owners on this site. I purchased mine on the recommendation of at least 6 different members on this forum. I am still setting up, so I have no experience with it, but it looks to be doing an excellent job of making bubbles, and as I said before, has excellent reviews.
38 Gallon (Freshwater): 1 Green Swordtail, 3 Yo-Yo Loaches, 1 Clown Pleco, 1 Blue Gourami, 4 Otocinclus, 7 Cherry Barbs.
46 Gallon (Saltwater): 60 pounds Lalo Live Rock, 60 pounds aragonite sand, 1 Coral Beauty Angelfish, 1 Peppermint Shrimp, 1 Mushroom Coral, 1 Emerald Crab, various snails and hermit crabs.
10 Gallon (Saltwater quarantine):