Well, I am just starting on my hand quilting journey but I wanted to share also. I thought I would like the smaller size...9...but found the 10 actually was better. I had a hard time threading the smaller size. I also found that the looser the fabric is in my frame the easier it is to get several stitches on the needle, and the needle seems to not bend so much. So, that is what I have learned so far. I am sure that things can very based on the fabric etc. so a year from now I may be doing it totally different :).
Happy stitching,
Jenna