Practice is the only thing that will tell you for sure. Draw a line on a practice sandwich and try to follow the line without using any thread at all.
I mark most of my quilts with a Frixion pen. The dark fabrics I use a chalk pencil. Cheap compared to the Pounce method. Plus you can either draw your own pattern or light box trace a pattern onto your quilt. Playing with the different designs is fun.
I bought a roll of tracing paper at the office supply store and use that for some of my designs also. I just don't like picking the paper off afterwards. Tracing paper is the same as the expensive quilter's paper and works great. Good luck and enjoy. Don't be afraid to try new methods.