The msx skimmers and the Octo/ msx skimmers are made in the same place. The octo's are copies of the msx. They are the same price, but I lean towards the marine solutions model because Joe and Rob are awesome guys to deal with. That, and the fact that, marine solutions designed them and they have all of the bugs worked out now.
The cheaper airline tubing is relaced now, and they also come with extra mesh to re-do your impellar when needed. The flatback mesh will last around a year or so though.