Eleanor Burns has a new book that all patterns are made using the Go. She has videos of her classes on you tube sewing the blocks in the book. I personally like the BOB dies. I prefer cutting the whole block at one time. Dies are addictive. I love my die cut machine it is just as important to me as my sewing machine and cost much less even with all the dies.
Side note. I just found out many are baking the mats to seal the cracks so they are like new again. I'm going to try it.