It is almost a personal preference. You need to try a different variety of thread and a variety of companies that they come from. Your sewing machine also plays a role in which thread you choose to use. I am the type of person who gets stuck in a rut that never has time to try new. I usually just use white to sew everything. I will reluctantly change thread color only when top stitching or machine quilting. I have found a great and affordable cone and pre-wound bobbin set from Signature that I can sew on all day long and never stop because of thread issues. I have also used a heavy weight (12) thread that gives your project a great texture, but needle changing comes into play. We will have to save the needle changes for another time... I have also tried a really thin thread almost sewing with hair. It took forever to get a sizable amount on the bobbin. This type of thread is deemed invisible. It is super thin and sinks into your quilt. I also have really been liking the mettler all-purpose thread. It has a great silk-finish that is so nice for top stitching and the durability for anything.
Over-view
12 wt. really thick have to change to bigger needle
40 wt. normal equaliant to Coats and Clark (just like grandma used to use)
50 wt. finer quality the new style of high quality mostly for quilting
100 wt. Really thin deemed invisible
So I am challenging you to try several different type of thread and see for your self. Please let me know what you have tried and how it turned out.
You can get a few different types of thread at my site www.alittlefabricstore.com
