So, I know most of you are into those big ol' full frames that take such beautiful photos, but I wanted to post a quick comparison of two smaller bodies. I got a deal from Canon on a refurbished SL1/100D last week. I already have a Canon Eos m. I like the m with the 22mm lens, but the LCD is hard to use in bright light and the black out between shots is annoying.
Quick comparison, the SL1 is slightly bigger, but lighter than the Eos m. I think the Eos m is more comfortable to carry and use with the 22mm lens and in the right light, but not such a big advantage with other lenses. I have small hands, but the grip on the SL1 feels too small even for me. I dug out an old handstrap, however, and problem solved. I left a little slack in the strap and I can easily access the button controls with my right hand, still need two hands for the LCD. The SL1 feels unbalanced with bigger lenses, but use two hands and that optical viewfinder, and it is so much better than the m. While I'll still probably keep the m with the 22mm lens in my purse, I'm switching to the SL1 for situations when I don't want to carry the 70D, like backpacking.
Anyway, on a quick test Canon SL1 with the 24mm pancake lens and the Canon Eos m with the 22 mm, I didn't see a big difference in image quality.
First photo is the SL1 (24mm, 1/160 s, f/2.8, ISO 100) and second is Eos m (22mm, 1/100 s, f/2.0, ISO 100). I was using window light on a partly sunny day, so the light is a little different. And yes, I really need to dust!