This aluminum case is great in the sense that it keeps the pi 4 cool and has no fan noise. The cpu temp is around 50C/122F which is comparable to cases with a fan. At first glance, I noticed the polished aluminum and lack of metal shavings and burrs which told me that care was taken when making this case. Some may say that this case is pricey, however I will continue to buy more as I need something that I can rely and has tight tolerances so the boards fit. I am using these for 3 redundant dns servers, dns blockers, dhcp servers, and various other things for a business I'm putting together. The only negative thing I can say about it is that there is not a way to mount it directly. I'm going to have to use a strap of some sort. I want to hang these on the wall with a dedicated usb hdd sitting next to the pi.