Google is your friend.....I cant post up other sites here. but google will lead you to them. there are some differences even between the octo's. As well there is sometimes a wait involved in getting the MSX's and the Octo Extremes, but there's a "cave" that has the Octo's. The only place that sells the MSX's is the site that carries the same name.Don't be fooled though the MSX's and the Octo Extremes are the same exact thing. The other just has a different sticker on it. Likewise the funnel neck skimmer by Octo is a tad different, and the version I have. The differences there are the pump is a Octo 3000 that is not mesh modded and pulls a little more power, but also has a greater flow rate. The neck is smaller than the Extremes and the MSX's. The funnel neck doesn't have the bubble diffuser. And the output tube and silencer are not as nice. Now, the pump can be mesh modded, the neck handles 42 scfh on the NW 200, just fine, the bubble diffuser not being there doesn't make a huge difference, and the output tube can be gate valve modded. So...the Funnel Neck is about 60 bucks cheaper and can eventually do as well as the others, but you'll have to mod it, of course you can do a little at a time.It's going to cost a couple dollars a month more to operate it. The extreme is good to go out of the box, though you may need to mesh the pump, I cant remember if it comes meshed. It will be a tad cheaper to operate, but the replacement pump is 50 bucks more than the octo 3000.
