I don't really have that much stuff. But I guess I tend to stick with the same brand when I upgrade unless I had a bad experience.
Phone: Xiaomi (Android). Same as previous.
Desktop: Linux Mint. AMD GPUs and CPUs. Usually just look for deals, but I tend to favour Crucial for SSDs. G.Skill for RAM. Seagate for HDDs. Dell monitors.
Laptop:: Linux. HP Pavillion (but it's ancient and barely worth mentioning).
MicroPCs: I have two Zotac ZBoxes. I like the passively cooled ones. Unfortunately, both Intel (both have minor issues with Linux because of Intel).
I've never been an AMD fanboy, but I've generally bought AMD because they were usually the better price-performance buy whenever I purchased. Now that I switched to Linux, AMD is something I'll actually seek out.
I guess the one thing I am a fanboy on is Vivaldi. Use it on desktop, and on the smartphone. Use it for email (client and provider).