The only thing bad about Monero is you really have to download the whole chain in order to get an accurate view of what you have in your wallet.

Of course this isn't too bad if you keep up on it. But if you check your wallet once a year, it will take forever to load.

ARRR is arrrguably better at privacy, but it yet to be seen if they will make it, and then, will they compete with Monero?