These mats work great for vinyl! However, when I used cardstock, the more intricate cuts got chopped up. At first, I couldnt't figure out what was wrong. I changed the blade, tried a different setting, tried different weight cardstock. Then it occurred to me that the only thing different was the mat. When I compared them, this mat is SLIGHTLY thinner than the Cricut mats. When I resumed my project using the Cricut mat, the cutting was fine. So, I think they are great for vinyl...I noticed no difference in the machine performance; but I'll stick to (no pun intended!) the CRICUT mats for cardstock.