I bought 3 different types off aliexpress these seemed the least effective also much worse than just normal foam ones. Haven't slept in them but do seem like they might go in too far.
I don't think there is any difference between the "filters" in material, or effect, I think that is only "hype", but at least you have two sets of "filters" to plug into the earplug. The earplug itself is very comfortable, very soft. Not disturbing during sleep.