Additionally:
I have been using Sulky extensively for hand work and machine quilting. Recently completed DD and SIL wedding OBW using it. Sulky comes in both clear and smoke and is a rather fine gauge thread but strong, IMO.
The thread (polyester monofil) does require a little getting use to. Needs an upright spindle for machine so it doesn't 'unfurl' for you. Curls quite a bit with hand sewing---but doesn't tend to knot particularly.
My piece at the right (profile pic) was quilted using Sulky. RaNae Merrill (author, Simply Amazing Spirals) first clued me into the diffences in monofilament thread a number of years back. Thanks, RaNae ! ;)