It depends on how you see the bestness.

I've earned most money with EOS, thanks to @kryptik who gave me a recommendation to buy it - and then I sold it with very good profit. Could have done better, but as I earned with it, I can't complain.

However on very different scale, I've enjoyed most Steem. I haven't earned money with the €€€ I've used to buy Steem, but being in the blockchain and trying to do something with the SP I'm holding has been most enjoyable. There are better things in life than only money.