EOS is now ranked 5th on coinmarketcap.com, with a market cap of $14.6 billion against the 6th ranked Cardano, whose market cap is now $9.6 billion (figures correct at the time of writing). Which Is A Better Investment?
In my honest opinion, EOS is going to probably be a better investment if you're looking at an extremely short investment term. The launch is only a few weeks away for the main net, and prices will undoubtedly start skyrocketing when that happens.
However, I feel like that ADA at this kind of price point is a better long term bet than EOS.
Cardano has demonstrated that its rallies can be extremely strong, and right now the price level for entry is extremely attractive compared to EOS's which has already been pumped a bit. Honestly both are promising, so it's up to you to research and decide.