well for me there are four important ingredients to paper piecing.
1- inexpensive paper
2- tears off easily when done
3- very transparent
4- hold up while doing it
I have a roll of pattern tracing paper that I bought from a Clotilde catalog several years back. Don't remember what I paid for it, but haven't used even half yet.
I also use the scribble pads, that kids doodle on, and I have some tissue ppr for wrapping that I am going to try. I don't know how well it will hold up during use, but I think it might work well, and I got 50 sheets for 1.99.
I also 'score' my small stitch seam lines, with the back side of my seam ripper, before tearing off paper. Works great. :D