Im also in the market for a small mATX case. I might have a different scenario as you (I use a small form factor video card and a NH-D9L cooler) but feel free to check the specs if it would fit yours. Here are my top picks so far, I have included the volume of the case to compare it easily. This list is ordered by volume.
Rosewill Legacy U3B = 1226.671173 inches3
Silverstone PS08 = 1446.61545 inches3
Raijintek Styx = 1545.4873429 inches3
INWIN 301 = 1714.747671 inches3
Silverstone FT03 = 1962.726522 inches3
CoolerMaster N200 = 2062.118016 inches3
Im leaning towards PS08 but I dont like the PSU orientation. Though for the price, I think im just gonna drill holes on top and flip the PSU fan up there. I havent thoroughly reviewed everything for compatibility with my parts, but incase anyones curious. https://pcpartpicker.com/list/fVgV9W