When you say the big 3 are you referring to Bitcoin, Ethereum and Litecoin? It's kinda crazy I still think of those as the big 3 although we kinda have a lot of nonsense, IMHO, in the top 10 coins.
Me personally if I had to rank like a big 5 I'd say...
- Bitcoin
- Ethereum
- Litecoin
- NEO
- Either Dash or Monero although Monero more of my fav than Dash
That's not in terms of biggest gainers just kind of my opinion on most established coins with biggest following and not just the coin of the hour