Young skaters and parents will tend to listen to their coaches - the figure skating world is a hard one to maneuver if you're new to it. I imagine most coaches have the most experiences with Wilson and MK, simply because they've been around longer.
When I was young and skating, we didn't have a computer, and the internet didn't exist, and everything we knew about skating equipment (not much) was gleaned by word of mouth. I think it's great that now there are forums like this, and search engines, and highly informative websites that give skaters more options, opinions, and knowledge.
I notice that most of the skaters I see that have paramount blades here have taken lessons with a certain coach who loves her paramount blades. Most freestyle skaters are in MK, Ultima, or Wilson blades from what I can tell.
I have gold seals currently, but I am more than willing to change brands if/when I need a new set, though that will be a few years away. I do love the idea of having to sharpen less with the stainless steel blades! I don't like the loudness of the paramounts, though - I watched a skater take her senior free test, and was shocked at how scratchy she sounded - and I do think it was the blades rather than her, her skating skills were pretty good (obviously, she was taking a senior free!).