Yes, they appear to be similar products. The Free Motion Slider needs to be taped down to the bed of your machine while the other two (Sew Slip and Supreme Slider) resist moving once in place. Teflon's life line is an excellent selling point which I had not considered until mentioned in this forum. Thanks for this input.
I am going to go ahead and purchase one of the latter two mentioned in the previous paragraph. Once I've had a chance to use it, I will report my findings as I really struggled with the resistance when quilting earlier this week and the project was just a lap robe.
Suzanne