In the 40L category this one is actually getting good reviews.
8-bay SAS-12G / SATA-6G hot-swappable high performance Micro-ATX NAS chassis
39.64L
CS382, supports big GPU and Radiators too.
And has a 5.25” meaning you can add 4 2.5” removable bays and has an optical slot too!
I made a thread for this already 