Desktops haven't needed to evolve much in the 201x decade.
Though I've had my head in the sand as usual,
enjoying my 8-15 yr old desktops, 1 older w/ side panel removed, breathing max air at my knees.
Sorry for a lack of RECOMMENDATION (maybe Dell Optiplex though), all depends on....
Silly Q's to ask yourself: do I like or dislike SMALL factor w/ half height cards, less air to cool?
Do you like the quietest possible chassis or is a little white noise (maybe even blue lights) OK?
Can you be happy with a minimal-ish video card, ie FANLESS? (even these can do a lot)
And all them audio/video preference details ( HDMI, is that useful?
..........digital optical sound out? Little things... )
and big things like onboard RAID and fitting raid1 or whatever IN your case/chassis, or not.
Finally for me, how about: Do you hate being "locked into" a brand/mfgr,
even it it just means you shop@Dell when your Dell power supply dies?
It's not that wide of a limitation, you can customize most everything else, so I'm ok w/that...
What used to matter even in a brick-store-alive world is
WHERE(ok, just another mfgr-preference now) YOU BOUGHT IT,
which of course matters less to "us" geeky fix-it-yourself types. -doug