I am a fan of A & E Perma Core and Omni (mainly Perma Core). Do have some Bottom Line that I will sometimes use. I have never had a problem with these threads.

Superior King Tut. I like the old fashioned look it gives and the color choices are great. I never have broken threads and lint isn't too bad.

Superior Omni and Glide mainly.

I use only connecting Threads Essential Pro. Cheap and wonderful to use. I do not quilt for $$. Mostly charity.