As a certified scraper nut, I'll chime in.

I have a nice set of card scrapers, four #80, one #81, one #12, and a #112. The ones that get used the most are the #80's and the cards. The #12 works great but is pretty aggressive as currently set up. The #81 offers a very delicate touch. The #112 (with Hock blade) is a PITA to get dialed in and never gets used.