I'm "bumping" this post once in the hopes I will get more replies. Thanks!!
I also have a follow up question to Princess's reply. I assume if I use one of these threads, I will have to use the same type of thread in the bobbin right (like the machine embroidery thread for example)? My thinking is that if I only have one smallish spool of a certain type, I probably won't have enough to do much if it has to be top and bottom thread. I can't mix general purpose poly thread and machine embroidery thread can I?