Camera brands are like music taste , it's how the final image looks you can take the same picture of the same subject . Using 2 cameras say the nikon or the Canon at the same price range , both images will be good , but different , that's were the choosing comes in . You need to see pictures and then choose the brand that suits your taste,
There is a well respected company that sells used camera gear , that comes with a good warranty . It's called MPB. Com
You can pay lots of money for a camera it may have more features. More buttons etc , but the image results can be just the same on a cheaper camera . Going secondhand with the money you say you could get a good camera and lens for that money . I have the nikon d5600 . Does all I want . I help run a Facebook group for that camera we are at 23k members so something must be right .