Replacing Paste and Tape on Steam Deck OLED

Hi, I'm planning to replace the factory thermal paste on my Steam Deck OLED and would like to know what brands you recommend. I've seen that Thermalright TFX has a good reputation for durability and performance, and since I only play casually, I'm looking for a high-quality, long-lasting paste so I can use it without worrying about frequent replacements.

Also, I noticed that when removing some parts like the heatsink or fan, some tapes are likely to lose their adhesion. I'd like to know what type or brand of thermal tape or adhesive I can use as a safe replacement, ideally one that maintains good contact and withstands heat like the original.

Additionally, I would like to know if the GuliKit joysticks (latest version) are really a significant improvement over the factory ones, and if it would be worth replacing them in the future.

I would greatly appreciate your recommendations for performing this maintenance correctly.