I used to have all ether once, and had loads of them, but sold them all for steem. Another one I liked was holochain, had a million of them. But I started off with litecoin and had a ton of them. I also like Cardano, but as I've said, I sold them all for steem and put them here on steemit, which means I can now upvote a good few cents each upvote at a 100%. I may get some more too if bitcoin goes down lower..