Here are a few things I question myself when trying out a new headjoint. I hope it helps
1. Does is have the perfect balance of resistance for me.
2. Does it produce the type of sound I am looking for?
3. Is the shape of the lip plate comfortable?
4. Am I able to change my tones and colors with ease?
5. How flexible is it for me when jumping octaves?
6. Can I play pp to FF evenly, or is it near impossible on the cut for me?
7. Can I articulate different passages comfortably and smoothly?