I'm building a server that is going to live in either my living room or bedroom so essential silence is a must. Power isn't a huge concern; i3-9100, 4 spinning hard drives, one m.2 SSD, two sticks of ram. I want capacity to expand to 8 HDs and a PCI raid card down the road. I don't want any loud fans or odd electrical noises. Price is what it takes but south of $100US would be a bonus as would be fully modular.