Most of the people on this board are really into photography. And you can get a long list of suggestions --- Clearly you are looking for an interchangeable lens camera, and honestly... they are ALL good. It depends on your budget, your objective needs, your subjective preferences.
I'll just throw out a handful:
I think the best all-around APS-C dSLR for under $1,000 is the Sony A77ii. A lesser known brand for dSLRs (though their mirrorless are becoming very well known), it features great image quality, fully articulated LCD, a very strong auto focus system, a very well built weather sealed body, in body image stabilization. It is the only APS-C dSLR that can shoot 12 fps, and it's the only dSLR under $1,000 that can even shoot over 8 fps. It has a fantastic electronic viewfinder, and it's live view vastly out performed the live view of any other dSLR on the market (because it is EVF/LCD, without a traditional mirror).
The best low-light full frame dSLR at the lowest price: The Canon 6d. $1400 for the body. Low light performance that is near the top of any dSLR. And of course, Canon arguably has the best selection of lenses.
Best general purpose dSLR without breaking the bank: The Nikon D750. $2300. My current camera. Just amazing, incredible low light performance, incredible autofocus system. Incredible Nikon lenses. Fast responsive camera.
Best APS-C mirrorless: From what I've read and seen, the Sony A6000 or the Fuji mirrorless options. They each have their pros and cons, but they each give you dSLR quality and dSLR-like performance.
For a smaller package, Olympus and Panasonic mirrorless have some great options, but I'm less familiar with those.
Then of course, there is a wide range of entry and mid-level APS-C bodies, like the Canon Rebel series, the Nikon D3300, D5500, etc, etc.... Can't really go wrong with any of these cameras, either. Truthfully, they give you the same image quality as high end APS-C (but not as good as full frame). Their bodies just tend to be less well built, less professional-type features, typically the af systems aren't as advanced.