To me the cosmic's flavor was a little too sweet, I've noticed that the availability is also much scarcer than honeycrisp (at least in my area). I will agree that the texture was MUCH crisper though!
To each their own, I see what you're saying though. They taste sweeter than a real apple should legally be able to taste. And yeah, availability is hit-or-miss, probably because they were invented so recently and there's just not enough propagated saplings yet to meet demand.