Hi Kerry,
What are you looking to gain from an SLR that you feel is missing on your current camera? Perhaps if you can tell us a little more then we can make better recommendations for you.
Camaeras to look at in within your budget would be Canon 750d, canon 760d , Nikon D5300 , Nikon D5500. You might also want to consider mirror-less inter changeable lens cameras such as the Olympus OMD EM5 II , EM 10 II , Fuji XT10 or XE2s.
There are so many options within your budget that knowing your requirements would help to narrow down the options.
Best of luck.
David