I'm using a DK9087 Shine 2 currently, with red switches and the sound of me bottoming out while playing games is kinda annoying to both me and my roommates. So, I want to buy some o-rings for my keyboard. There are 2 choices in WASD, 40A-L and 40A-R. Any opinions on which would work better on the Ducky keyboard? Also, are there cheaper alternatives to the ones sold at WASD (with similar quality or feel)?