I know nothing about them and there is little info in the section on this forum that critics scroll saws. What I saw on their site would make me a little dubious about their blade holders, they just appeared weak to me, but I really don't know, not having seen one personally. As for PC boards frying, it does happen, but rarely in my opinion, but again only my opinion. As for belt changing, it wouldn't be a problem for me. I had a lathe that required belt changes and I never minded it. Others certainly would disagree with me on that. Five speed being adequate,,, depends on what the speeds are. I know I change speeds often when I am scrolling. It also depends on what you get use to and if the five speeds is what a person gets use to I think it would be fine.
Sorry I can't be much help. I'm anxious to see what the responses are. I'd like to learn more about them.