Yeah, those are iL/Happ Competition buttons. What I'm using now.
Unfortunately they're not the same quality plastic that they used to be, at least not the Happ-Suzo branded ones. I've had my buttons for a very short period of time and the buttons on the 2p side are scratched to sh*t from my longer fingernails. My 18 year old concave Happ buttons still feel glossy and smooth. I've never had short fingernails on my right hand anyway because I'm a fingerpicking guitar player, so it's definitely the new plastic formula. Thus, I'm on hunt for different buttons.
As for DZ's opinion on not needing Japanese buttons on an Anerican cab, well I don't own any candies ATM so my big red is my main player and I prefer Japanese sticks/buttons as a personal preference. It's not like I'm throwing the original buttons/sticks away, they're in ziplock baggies stored in the coin return bin.