I took 2 workshops with Edyta Sitar a few years ago and she recommended using the Aurifil invisible - Aurifil is one of her sponsors so she uses it on many of her quilts. She gave me a sample spool to try
- she said to use as my top thread with cotton thread in the bobbin. I have used a few spools since then and I like how it sews, looks and wears - have not had any problems. I have both the clear for lights and colours and smoky for darker fabrics.