i have an HQ machine & love the connecting threads machine quilting threads.
it is a good idea---instead of (stocking up) buying one or two of a particular thread & try it yourself- everyone is different & has their own likes/dislikes- and machines have their own (personalities too) find what works for you- then buy more- connecting threads has free shipping at $50 so i usually buy sewing threads & other things too-to take advantage of that if i only need one or two machine quilting cones.