I think they are the best things since the rotary cutter. It's great for anyone that has hand, neck, or shoulder pain when cutting. Many quilt shops are buying one so the customers can buy fabric and have it cut into kits. I haven't spent that much money of any quilting item other than my machine but when DH decided he needed a new ATV for 8 x the cost of the Go I hit that order button in a flash. :D I decided on the Go for the portability of it.