Right now in the US on Amazon Shipped free
This is the best bang for the buck still for doing SR's
These have gone up slightly in the last few years but everything has
Shapton Kuromaku 1-5-8-12k you can use as is,, or add a Natural after the 8 or 12 depending on which one you finally buy
Some faces find the 12k a little harsh, which takes you back to your question about Pastes
You can actually "Soften" that bite with the proper use of the proper CrOx on the proper surface
(99% pure .30~ CrOx applied to either Felt or Leather will soften that edge)
https://www.amazon.com/SHAPTON-Kurom...7-857e17e03685