Some might like the built in PSU, but personally, not a fan. The PSU is one of the things that stops working more often than other parts of the PC, so having it external to easily replace it seems like a better move (also USB-C charging is nice, though it seems that this one doesn't have that).
The Beelink EQR6 is a new mini-PC with one of three AMD APUs, which, depending on the model variant selected, should bring considerable performance. The model also supports a fairly large amount of RAM.