That’s a tough one. Sony definitely offers a lot of enticing specs, and I will always keep my eye on them, but I chose the m50 for future growth. I really like canon’s massive choice of glass and hope to start collecting lenses for when a better mirrorless option comes out. I also like their touch, flip out screen and it’s interface, the colors, and the body feel. I wouldn’t rule out Sony, but if I were going to go with Sony, I’d probably spend the extra cash on the new a6400. Hope this helps! (I don’t think you can go wrong either way)
