With any substrate you need to learn to live with it. That includes how to fertilize, if necessary, how to do pruning and replanting, etc. Aquasoil is use by a huge number of people and I rarely see anyone who doesn't like it. MTS is also used by a large number of people, most of whom seem very satisfied. A big difference between them is that there is no reason to put sand or other substrate materials on top of Aquasoil, while MTS almost has to be topped with something. The other big difference is the cost of them.