I like all the portal systems regardless. It's all about user preference.
We're not in some death match to be better than each other. We all love Simple Machines, and we love it enough to make code alterations to the extent of creating system portal additions to it. We are all in the same place in regards to our hearts. We code to help people and to show our passion, and we get them to enjoy their SMF experiance even more.
You don't need reasons or logic to help people. Arguing what portal is better is no different then doing just that. Be it Simple Portal, PortaMx, or Tiny Portal.