For me, I've become an M&M player. I love the freedom that M&M gives. I love how it streamlines the D20 system and adds the point based gaming onto it successfully (as much as I loved GoO, BESM d20 and SaS d20 sucked).
I personally wish that True20 was loved by more people since True20 would be a nice substitute for standard d20, but alas, True20 is not even a blip on
EnWorld. Thankfully, GR created enough material for M&M that I think it now could easily be used to do anything that True20 and DnD was able to do (save for Monty Haul adventuring).