There are many good brands of sewing thread now. All weights, plys, types, and functions. I would suggest Aurifil because it is not linty, has no slubs, and will give you less trouble from the start. Remember the needle size and type for the size of thread you use is more important then what thread you choose. I use Organ size 75/11 when I use Auriful 50 wt 2 ply thread. Please don't buy the cheapest thread, start with the best brand and work down so you can compare and then decide which one is right for your machine. I use thread by Superior and love Wonderfill brand too. One thread I do stay away from is thread made from left over pieces of short staple cotton woven together.