Yes, thanks SparWeb, I saw the article, but alas like many HP articles they talk about what the item does, but they dont compare product A to product B like a consumer reports might. I was hoping to get some experienced opinions from some of the members of the board. For example, the Heliodyne helio pak I installed at my neighbors house has done well for two years now, but some of the factory connection have leaked. I really like the 10 year warranty that the CalliFFI products have, but I have no personal experience with them. Any advice or thoughts is always welcome. - thank you!