Thank you! I like them so far for my sketchbook. From what I’ve tested so far, favorite to least favorite:
1. Posca (pricey)
2. Guangna Skin Tone 12 Set $11.99
3. Shuttle Art 28 Set $16.99
4. ARTISTRO 24 Set (do not recommend) $11.99

I’ve seen really good things about Arrtx! Trying them next!