I will say the holes that you line up fabric are FANTASTIC!! Fold your fabric selvage to selvage, press it and then line the holes up on the folded edge to make your "true cut."
That acctually is one of my favorite parts of these rulers in my opinion. And then with these rulers cut your strips and then use the 1/2 or 1/4 triangle etc.
Also these are "smart piecing" rulers. So instead of cutting your fabric at 7 and 7/8 you just cut your strips at 7 1/2 and then use the 1/2 square triangle. That saves you time and money on fabric.
Okay I could probably go on....but i won't :P I guess to short if it is, I really like these ones I have. :P