[throwaway420]

Different camera systems are best at different things. Are you shooting sports and action and wildlife photos? Are you into portraits? Shooting video? Dark clubs at night? Street photos? There's lots of types of photography. For me I'd personally look more into Fuji and Nikon stuff, but there's a lot of options.

I'd second looking more at the glass you'd need to get than the camera. The camera body you spend 1000-2000 or more on today will be available on eBay for relatively cheap in 5 years, but good glass will retain its value and use for decades. There's 20+ year old lenses that are better for some tasks than any modern equivalents: they just lack a few modern features.

Depending on your type of photos, look into spending more of your budget on lighting. You can do more with a junk camera and Lens and great light than you can with poor light and a great camera and lens.