Bitcoin was the first implementation of blockchain, following which there are many new platforms and implementations came up. So it depends what you want to do with the blockchain.
Every algorithm has its dvantages and disadvantage. Bitcoins proof-of-work is still considered to be one of the most popular consensus algorithm. Blockchain technology does many useful things like to control the vote in a distributed way in elections, creating disintermediation between the parties. Because of that, there are many implementations of Blockchains.
Hyperledger Fabric is a private Blockchain, where the acces to it must be controled Ethereum is a public Blockchian to transfer assets. Anyone could create his tokens and start using them through the Ethereum network. So, you will use an existing Chain and attackers couldn't hijack you.