I have struggled to get quality sleep for years and it negatively impacts every aspect of my life. A friend of mine had severe sleep problems and then one day went to sleep specialist and they ended up putting him on some sort of machine (I don't remember what it was called) but after he started using that thing, all manor of other problems that existed in his life vanished.
There is no doubt in my mind that there is such a thing as quality sleep and I feel as though I rarely achieve it. Maybe I will go and see a sleep specialist someday. In the meantime i am going to try out those pills you have listed above. Could be worth a shot!