There are a lot of NAS case you can find in China(Taobao), they are cheap(usually $40 for case with 4 hotswappable 3.4 drive. They use mini ITX motherboard and flex 1U PSU

I considered that, but it doesn't make sense price-wise. You can get the storage bays for very little along with your compute, certainly cheaper than separate hard drive enclosures.

The Aoostar top one actually looks pretty good for what it provides (sus really, $700 for a NAS with 2x2.5G E and 2x10 SFP). But still, the compute options are very limited.

I received the WTR PRO yesterday and moved my Unraid install to it.

Seems entirely reasonable so far, everything works well. It’s much quieter and lower power than the HP micro server gen8 it’s replacing.

I just ordered the Ryzen 4 bay Aoostar one the other day to replace my HP microserver gen8. We’ll see when it arrives whether it was sus.