Aqua clear and Emperor filters are the two best HOB filters on the market right now. Just use the respective media for either one. With the emperor, you have a bit more play in the fact that it comes with a media basket for which you could put some polyfill or something similiar in that will aid in capturing very small particles. Big Al's has the cheapest prices, and they don't only match prices if you find something lower, they will beat it by 5%. Super fast shipping from them as well. As far as heaters, Ebo Jager and Tronic are very popular, can't go wrong with either.