I used to sew with any kind of thread I could find on sale.
But then I found that when sewing tiny pieces for miniature quilts, the piecing was more accurate with a thinner thread. By trial and error, I found that Aurifil thread makes the best seam.
Plus my Brother sewing machine LOVES machine quilting at high speeds (oh wait...maybe it's me that loves it!) and it does a great stitch with Aurifil. Believe me, I tried many other threads that my machine chewed up and spit out.
I recently ordered a box of neutral Aurifil for piecing from Tristan threads and I immediately wound up 6 bobbins. Wonder how many seams I can sew with these bobbins? And I wonder how long this box of thread will last?!?