Ive skimmed page 1 on this...havent hit pages 2 and 3 yet.
However, Ive been a fan and proponent of Hero System for ever...and with the "Champions Complete" available now for a REALLY good price (plus, if you buy at your FLGS, you can get the PDF for free if they participate in the Bits and Mortar deal). It requires DM work to set the world up, as Hero is a toolbox, but I recently introduced a friend to Hero and he was amazed at the flexibility, and really took to the combat system.
It can do every genre and every power level. 6th edition is really well written, engaging, in depth, and yea...a ton of fun.