I am sure there are better products out ther but we've used Lube a Bond speed coat for years and have always had good luck with it. Have we done a direct comparision to other products the answer is no.
Lubrabond A is superior, the cheap stuff, graphites, etc, don't last. Racers (flats) have seen as much as 3 mph difference using it (your results may vary). Many have used in on race skis also with excellent results freeing up the ski.