I think this would benefit from admin input for the newbie value.
My instance, being around anarchy and complex social and political topics, is NOT newbie friendly. I would think having a way for admins to rate their instance, and potentially a text field to explain why/why not would be useful.
Elegoo petg and PLA have become my go-to over the past 2 years. Rapid vs pro tend to affect me more with how brittle the end product is than printing speed. I'm using a K2 Plus, but also printed on Anker M5C.
Fun detail: you can order 10kg packs for a good discount vs other shops if you hit their site directly.
My only gripe is they don't have variety packs of their fancier stuff. Some of their silk is gorgeous.
I usually have gotten about 35-40% rh on my should out of the bag. I still get good quality at that level, but would warn to actively dry a bit if you are in a more humid area for sure.