Welcome to the forum.
Firstly, when you look at an image do you stand back and take in the whole picture or get right in with your magnifying glass and check out the detail? Stop pixel peeping, if you zoom in to 100 percent and beyond they'll all be the same and it's not how you look at the final image. The higher the resolution, the further in you have to zoom to see what you are talking about though.
More often the quality of the image is more to do with the quality of the lenses you purchase, not the body.
Technically, I don't think there is too much between them, maybe go into a store and handle each one and see what feels best?
Just remember, your buying into a system, so check out all the accessories and lenses you think you'll want as well.
I'd seriously look at Sony, what you get in that camera is great value, but their flash system sucks if you intend to use it.
Feel free to share some images, especially ones that you think the camera has let you down, we might be able to better help point you in the right direction.
C&C always welcome