I use either John James or Roxanne needles - generally 'sharps' in either a 10 or 12- depends on what thread I am using- often for English Paper Piecing I use silk thread- I prefer a bit longer needle -betweens for me are just too short, 'Sharps' are a nice size for me, glide well and last through a project. use what you are comfortable with- that works well with your thread choice-