Custom PCs are one, but if you want to get mainstream off the shelf, Lenovo is where it's at. Lenovo has the best aftersales, best customer support, you do not pay the proprietary Apple/Dell tax, and you can considerably modify your PC hardware. M Though beware, your PC will have a hard time getting onsite customer service after 10ish years. Anything under 7-8 and it will stay easy, mostly because new generation of PC components make old ones hard to procure.
This Lenovo AIO we have is 13 years old, last month dualboot installed Debian 12 alongside Windows 7. 7 is untouched due to legacy hardware and peripherals, made an image backup, installed Kaspersky Free and an anti-executable and it chugs well. Debian 12 GNOME runs really well on 4 GB RAM, though just another 4 GB would really improve things. Not even SSD is needed, just a HDD replacement after 13 years.