tommorris, 
#LazyWeb: looking for a PC. Mostly for headless home server—Linux w/containers. Currently using a Pi4—but RAM/CPU/mini-SD doesn't quite cut it.
Desiderata: not a full tower if poss (prefer Mac Mini form factor), mainstream architecture, reasonable price, efficient power use.
May wish to add gfx card later for gaming. (eGPU on mini PCs—doable?)
Have built boxes in the distant past, but I value my time.
(Reply guy pre-empting—actual experiences please, avoid "you ACTUALLY want Y not X" etc.)