Just an observation but based on my own testing and flicking back through this thread at posted images, it certainly seems that with the exception of 22/2 lens all of the "decent" images taken with the M5 have come from non-EFM lenses
I'm happy with this from the 15 - 45 f/3.5 - 6.3 .... bearing in mind it's a kit lens. I guess you need to decide what you're happy with, and why you'd consider the M5. I'd have to say, that if I really examine my images, then apart from the 22 f/2, and my other faster EF-S and EF glass ,,, some are a bit soft using the 15 - 45. But hey I get to use all my other canon lenses. And exactly what do we expect from kit lenses.














