The "best" at what? It depends on what you are using it for as to what it is best at. If it is biological filtration you want then the media simply acts as a breeding ground for the bacteria. It has to perform several functions to do so properly. It should have a lot of surface area to provide lots of space for bacteria to grow. It should allow for good even water flow to all the bacteria so they are all well fed. There are some nice to haves too. Media that is easy to maintain is always good to have. That means you can rinse it easily so as to maintain that good water flow. As to a balance between aerobic and anaerobic bacteria well one needs oxygen and one dosen't so the balance depends on where and how you use the media not so much on the media itself. A bio wheel on an HOB promotes aerobic bacteria due to its exposure to air, where submerged media promotes anaerobic bacteria since exposure to oxygen is much more limited.
Many folks, myself included, like the filter sponges because they are simple to rinse, they maintain their shape, and they last for ever. Some folks like other media and/or a combination of them. For myself I switched my Eheims to just sponges leaving out Ehiem's media. However all the media work pretty well or we wouldn't use them. I suspect this fellow is just trying to sell media, his media.