I'm using D'andrea lemon oil for years, it has nice smell and cleans freatboard nicely, restores deep color and it is not sticky..
Guitar polish is better than I expected.. I applied it with the cotton pad, and polish it with a rag, and the finish is shinier and soo smooth to the touch...
The string cleaner I couldn't judge, because I don't have really dirty strings, because I wipe the strings with dry cloth before and after every use... But the smell of it is great (like something floral)
The cloth is nice and soft, without the edges. I would recommend washing it first with hands for a better absorption ...