I have three computers I use regularly.
My workstation:
AMD Ryzen 9 7950X
128GB DDR5-6000
AMD Radeon 6900XT
Nvidia Geforce GTX1070
3x 2TB WD SN850 SSD
My server:
AMD Ryzen 5 3600
64GB DDR4-3200
4x 8TB Toshiba N300 HDD
3x 500GB Kingston A2000 SSD
My laptop:
Lenovo Yoga Slim 14"
I do CAD and CFD on my workstation, so a beefy CPU is mandatory. The 7950X is pretty amazing, with nice 10 it'll happily run just about anything in the background, and the load is imperceptible on whatever I'm doing in the foreground. I can work in multiple containers and virtual machines simultaneously and never worry about running out of computer. The GTX1070 is just there to give me CUDA without all the hassle involved in getting pytorch to run on the 6900XT. I barely use CUDA, so I don't feel any need to upgrade yet. The SSDs are in a ZFS pool, giving me 4TB to play around with, with redundancy, automatic backups to the server, and all the other nice features ZFS has to offer. The 6900XT is for gaming, it handles Civilization V and Stellaris just fine. Custom loop water cooling with a 280mm radiator keeps the temperatures low even at full load. Only issue I've had is with the DDR5, which really doesn't like running at high frequencies in two DIMMs per channel mode. I've had to loosen the timings quite a bit, and it takes literally ages for the machine to boot.
The server is mostly a NAS. The HDDs are in a ZFS pool, with the SSDs serving as metadata and L2ARC special vdevs. The server is also a wireguard node, letting me remotely access any device on my network. I'm running 10GbE between the server and the switch, and between the switch and the workstation, but there's probably some configuration issue somewhere because file transfers rarely go faster than 5Gbps.
The laptop is for travelling. I used a 2013 Macbook Air until a few months ago, when its SSD finally died. Apple SSDs are weird and proprietary, so I got a new laptop instead. It has an OLED screen, which is pretty cool, but I'm not particularly fond of the keyboard, the trackpad, or how noisy it is. I miss my macbook.(