Here's is another vote for Deb Tucker tools. They might be a bit pricy up front, but they make several sizes of blocks, so you should be able to use them for multiple projects. And the results can't be beat.
Having said that, I made one SAS quilt with the Wendy Mathson trimplates and was very happy with the results. I bought her tools before I knew about DT. I liked the process and the results, but her tool only makes one size of block. My SAS is here:
https://www.quiltingboard.com/person...s-t209159.html
SAS is my favorite pattern and I'm looking forward to seeing pics of yours.