Wearing my "quiet computing" hat, I consider these up-to-date (at time of writing) cases to be modern classics:
1. Be Quiet Silent Base 802. This is my current case. It's a brilliant design and is very easy to live with. I stripped out the factory supplied fans and replaced them with 5 x Noctua NF-A14-ULN (3-pin) fans. The "ULN" in that part number stands for "Ultra Low Noise", and these fans certainly deliver that -- they are whisper quiet. The fans go perfectly with the 6 x 3-pin fan controller which is included on the backplate of the case. I also run a Noctua NH-D15 air CPU cooler. Totally recommend this setup for quiet, low-maintenance computing, and a retro (non-RGB) look that really grows on you. I prefer the Silent Base 802 to Be Quiet's other offerings, the premium Dark Base Pro 900 Rev 2 (too demanding / hard to live with in my opinion) and the simpler Be Quiet Dark Base 700.
2. Fractal Design Define 7. Elegant clean lines, and again, very easy to live with. Arguably, even easier to live with than the Be Quiet Silent Base 802.
3. Fractal Design Define 7 XL. Elegant clean lines, very easy to live with, and even more build-room than the standard model.
In addition to SSDs (NVME and SATA), I still run traditional mechanical hard drives. The cases above all support an ample number of drives, while keeping noise under control. Choice of mechanical drive also helps with this. On that point, I selected WD Reds due to their anti-vibration properties, all-round low noise, and good performance.
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