The Pazzles Inspiration blade, the Gazelle regular or heavy duty blade, the Scrap-Savvy blade for Gazelle regular or medium to heavy weight, or the Cricut Deep cut blade all work well for me. The heavy duty Gazelle or Scrap-Savvy medium to heavy blades seem to last longer and cut better. But any of these will work on the Cricut.
If your paper is tearing, you may just need a new blade.
Julie, craftymusician@... Flanagan Educational Services
Purchase MTC: http://tinyurl.com/JF-MTC2