One thing that I would add here is ALWAYS LOOK at your spool and read what it says.....
The one absolute thread you do NOT want to use in your machine is Hand Quilting Thread, it has a finish on it that your machine will not like at all....that being said I would only use Machine Quilting thread for quilting not piecing. Also so threads do shed more lint than others so I would also recommend you look at your bobbin case every time you put a new bobbin in and clean with a little brush all the lint....that lint build up is what can Kill your machine faster than anything....IMHO
