Got a great deal on refurb unit, plopped in 32gb RAM and 512G Samsung 970 EVO, installed Hyper-V server core and was able to consolidate 3 old laptops running all my old VMs.  Fan set to "cooler" mode yet barely ever activates.  Running a pfSense firewall (with a few USB gigabit nics), a plex server, a home automation server, a few ubuntu infrastructure servers (LAMP/db/syslog/pi-hole) and even plenty of leftover capacity for a win10 LTSC 'disposable' VM.  Looking forward to getting a second NUC and using the thunderbolt3 as a HA/LB 10gpbs link between them to form a cluster.  For under $500 all-in with ram/ssd/nuc I am extremely happy, especially since I'll get a few hundred back from selling the old used laptops that were running all this stuff before.  These little boxes are a lot more solid and powerful than I ever thought.