I was very tempted to run pellets, I thought that it is a good progression from doing Prodibio.
However I have gone down the Zeovit path, I have seen some amazing tanks that were Zeo that converted to Bio Pellets later on though. I had plans to run some sort of hybrid system of the two methods.
I believe that you might be able to stock your tank up with more fish if you run the pellets. Like anything in this hobby, you just have to take your time and not expect things to happen overnight.
An understanding of each methodology is a must because each system has a certain way of doing things.