I had a regular slider which stopped sticking and somehow got caught into the back of my quilting LOL. Oops shoulda cleaned it.
Now I have a SuperSlider and I do think it is slipperier, but I am not good enough at FMQ to know if it makes a difference. My Aunt Grace used to say. A poor workman always blames his tools... well, not me, I blame me, not the slider.
And yes it does get thoroughly irritating to change a bobbin. I make a point of putting in a full one before I start.
But bobbin washer? LOL I've been quilting almost 3 years. Are my bobbins dirty?