Use the thread that you have or can afford that makes your machine happy. Some machines are very particular and just won't stitch or behave well if they don't get what they like. My machine doesn't seem to like monofiliment thread so I just don't use it. Sometimes changing your needle or using a different kind (topstitching for example) will make a huge difference. Spend a bit of time, make some samples and try out some variations to see what works.