My absolute FAVORITE thread for handquilting is Valdani 35 weight. It is not coated so I run it through bees wax to prevent knotting. I can easily cut a 36" length and not have it knot up on me. I simply slide it down the needle every 3rd or 4th needle full. It is wonderful thread made in Romania, I think. Can be found at some LQS and also ordered on line here:
http://www.thethreadexchange.com/miv...tton-35-weight