If you use the same keyboard for years then PBT keycaps might be a better than ABS keycaps since they will last for the life of the keyboard.
How to Clean a Mechanical Keyboard - Das Keyboard Mechanical Keyboard Blog
PBT Keycaps vs. ABS Keycaps - Das Keyboard Mechanical Keyboard Blog
Cherry MX PBT Keycaps with Black Dye-Sub Inscriptions, The Das Keyboard Gray PBT 104 Key Keycap Set will bring a new, soft touch to your Cherry MX
Das Keyboard Gray PBT 104 Key Keycap Set
Das Keyboard 4 Professional for Mac Custom Mod with Gateron Black Ink V2 and NicePBT Sweater Weather Keycaps, Lubed and Filmed, Foam Mods
PBT Keycaps vs. ABS Keycaps - Das Keyboard Mechanical Keyboard Blog
What are doubleshot keycaps? Are they really worth it? - Glorious Gaming
ABS Vs PBT: Let's Understand Different Keycap Materials – mechkeysshop
Das Keyboard 4 Professional Mechanical Keyboard
Backlit Side Print Keycap Set, Shine Through 136 Key PBT Double-shot, Cherry Mx Mechanical Keyboard, OEM Profile, Gamer Keycap
The Das Keyboard Professional Keycap Set has a modern, professional font and fits all Cherry MX switches. It is the set that is found on our Das
Das Keyboard Professional Keycap Set