Who owns the most Bitcoins (how much)?

I know that there are several PoS coinsand also there are many masternode staking coins there (which i think most of them are pretty shady and priobably scam). The question is - which one of them all do you tyhink is good buy right now?

That includes two main thoughs - your believe in that coin future growth and also the stake you will get (because this is pretty different too).