I use:
Hardware:
PowerMac G5 2.5 DC PCIe (I took PowerMac 2.0 and put a 2.5 GHz processor in it) - Technically the 2.7 PCIX System is still faster than most things, but the PCIe systems are newer.
X1900 PPC Radeon
Dual 27 inch displays (one 1080p and the other 4k). Driven from the one dual head video card.
Use a video editing SSD and a 1 gig pcie nic.
Software:
MorphOS 3.18 (3.19 already well on it's way and it has been constantly developed with 30 or 40 releases in the last 20+ years)
Iris
PolyOranizer
Wayfarer
Pagestream
Lots of native OS components that are part of a base install (PDF, Jukebox, jalepeno, etc.)
Some 68k stuff like outline, final writer, and turbo calc. Everything else if pretty much native MorphOS at this point.
You certainly can cheat with wayfarer and containers for Libre Office or other software, even windows

. I just zvnc over to my pc for zoom and other specific things.
Dual monitor is really good, you can click a mui button on the window and it jumps to the other screen, you can mouse over to either one, and screensavers automatically use two displays. I had to use two different video cards and two different screen savers on my 3000.
All the software I listed above has had major updates in the last five years and look to continue going forward. Iris has calendar invites now and is my favorite email program on any platform it just works so sweet, PolyOrganizer has really a great design you can do so much with it because of unique features or features seen on much bigger systems, Pagestream creates professional documents and is due for another MorphOS update this year. Wayfarer is legendary at this point, it's kept on the latest webkit and work beautifully. I watch 1080p and some small 4k for movies. It stays up for weeks without the needing to be rebooted. I use it constantly for work, it is a lot of fun. I actually tried using classic and other Amiga compatibles many years ago for the same purpose, really no competition.
This system is very popular both Chris Edwards and Acill have the identical system I have and will be posting video content sometime on it... You can get them for 100 USD now. So maybe $200 or so all in with a license and your well beyond anything else at any price to get the best updated Amiga experience...
I'm happy to start another post if you want to discuss this further...