In article , Mayayana says...

You might want to ask in a Windows forum if
you want to hear from people who actually know
about Windows.

I asked in rpd - never posted in a Mac forum.

The all-in-ones are basically budget machines.

Not really. Some are quite high-end (4K screens, I7 processors, 32GB RAM
etc.)

Like iMacs, they have limited upgradeability, yet
typically cost far too much for what you get because
of the basic rule of electronics: Smaller costs more.
And like any kind of all-in-one, if one part breaks
you may have to junk the whole thing.

Unless you can repair it and upgrade it yourself. But unfortunately many
AiOs are stuff which is glued together :-(

If you want the best possible display then I
wonder why you'd limit yourself to all-in-ones.

Convenience - only one "box", no mess of multiple boxes connected with
cables.

Presumably you don't need portability, so why
not just have a desktop computer and look for
the best monitor?

See above. In principle the ideal device is a 24-27" tablet with fast i7
processor, 32GB RAM or more, slot for SSD and slot for 2.5" HDD, 4K high
quality display (those with the new RGB LEDs), user upgradeable (user
can open it and replace/upgrade HDD, SSD and memory, weight as light
possible ( 2 or 3 Kg). With sort of a mounting bracket so that you can
fix it as a monior and take it off in case you want. Internal battery
not needed or perhaps small for for 5 minutes of autonomy, in case the
power gets cut off for some reason.

But we are quite far away from such as a device. Currently on the market
you find only behemoths with up to 16 Kg of weight.
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site