I love mine! I've been able to do so much more and learn so much more quickly since I've been able to cut easily and straight.
I find now that when I'm away and have to cut fabric the old way, with just rulers, I get nervous and don't want to do it. It's great to be able to eliminate the fear of mis-cutting. Not that I don't ever make mistakes, but I have way more confidence cutting with this system.
I highly recommend this product!