As to the question--well, I have a problem. I've probably run more supers games than, well, anything else over the last 40 years. I've run Champions, DCH, Superworld, M&M, V&V and probably one or two I've forgotten.
And these days nothing quite works for me. Though I respect the people that heavily narrative style systems work for, I'm just a bit too much of a trad guy not to want a heavy dose of that, even in my supers games.
These days, if I were to start another, it'd probably be Champions Complete, Mighty Protectors (V&V 3e), Supers! RED, BASH UE, or the new version of Prowlers and Paragons--but all of them have some issues or another to go with their virtues. And they're not issues I can entirely ignore.