Wow, that is quite a loaded question! Unfortunately, without a little more data it’s kinda hard to give any recommendations…
What do you use your current camera for? Do you mainly shoot landscapes, portraits, macro, sports, etc? What features does your current camera miss to make you think that you need to upgrade? If you have an idea of why you need to upgrade, that should help you to know what to upgrade to!
That said, I think the Canon EOS 70D could be a likely candidate…