As much as I'm an Oracal fan...I must say I will no longer use 3751. 3 different rolls, and nothing but bad luck. Can't profile for it at all, colors refuse to turn out right, it's a one time stick deal as the adhesive pulls off if you try to reposition (which is bizarre because it's not very tacky?)...just bad, bad luck. Sticking to 3951 as long as they keep making it.