The interesting bit above, for me, is that you've wound up prizing fast focus more than pixels. That's not good or bad, just interesting. Small sensors have an advantage there, and Olympus has done everything they can to maximize that advantage - from what I've always read, those cameras are about as fast as it gets, period. And to loop it back through Rayvonn's point... if AF speed is what's sometimes keeping you from getting a good image, then chasing AF speed above all else would make sense. If AF speed isn't actually stopping you, then ... you may not be done pondering this great question.