I watched the demo at a quilt show and didn't buy them but regretted it after I got home. So at the next quilt show I watched the demo twice and purchased the set. I use the 6" ruler a lot and I love it especially if you are cutting lots of strips. I have used the 2 1/2" some. I think it was worth the investment. I think I might buy the 10" ruler at the next show I attend.