Thanks for your response, yeah I'll def. join the discussion in the chat box if I can make it! :)
btw, how long does it usually take? Do you finish all reviews in a session?
I use the HI-POLYMER eraser it's white (it is shaped like a rectangle). You can get 3 in a pack from Target. I love it. I use it for all my pencils except one that has a really good eraser. I plan on using this on test day.