I dont know which one is the best but if i choose one of them, i will choose monero.
Monero is older than the other mean it has proven itself that its good.
Sure , monero it's the best out there imo also
However it's already well established and eventhough still plenty of room to grow , the potential is even greater with coins like XSPEC
I like deeponion also but there is the problem of price instability due to airdrops