I like the 4x20's too, and the way I have mine hard plumbed I'm gonna have to have that instead of 2 2x20's plumbed together. I'm still intrigued with the rubber Saturn ones the poolman has on ebay... just hate paying for something a second time. Also - right now on ebay they're going for almost $30 over the cost of buying them direct from them! We could be swimming now, though, if I had some hooked up... so gonna bite the bullet soon and purchase some. Are the solar bears all one 4x20 piece, or are they 2 2x20's pre-plumbed together?? Thanks again.