1 - Bitcoin (BTC)
“Bitcoin has proven its ability to efficiently serve a few use cases that represent giant market opportunities. Amazon first proved it could efficiently sell things online and it focused on this ability before growing into other opportunities. I think the same will be true of Bitcoin.”
2 - Monero (XMR)
“If I were forced to pick one thing that I was most concerned about for Bitcoin, it would be a lack of privacy. Each Bitcoin should be worth as much as any other Bitcoin, regardless of who owned it before you or what they did with it. For now, this isn’t a big problem. But Monero is a good hedge against this risk, since it’s more private than Bitcoin and therefore doesn’t have the same degree of fungibility risk.”
3 - Litecoin (LTC)
“Silver to Bitcoin’s gold. The code is so similar to Bitcoin that Litecoin is able to leverage Bitcoin’s developer network and improvements. This is a big advantage over other coins that try to build a developer community from the ground up. If anything catastrophic happened to Bitcoin, a decent portion of the capital would likely flow to Litecoin.”