Case is very subjective here - since you're not overclocking or adding a second GPU you don't need to worry too much about heat (unless you live in the desert or something).
Honestly I have a pretty expensive build in a Corsair Spec-01 - it's a $50 budget case I added I and 2 fans to and it works great. (I have a i5-4690k and GTX 980) with neither overclocked.
Most new mid-atx cases will fit your gear - just pick one that looks good and fits your budget. I like Corsair, Phanteks, and NZXT the most.
This is a great case for $70
https://www.nzxt.com/products/s340-black-blue