Safemoon.sol VS openzeppelin-contracts

sorry to anyone that believes this. Please look into the actual token before investing in it. This token is a copy and paste which was pretty obvious if you look at safemoons team page which doesn't have anyone who is capable of writing or reading code. Here is the safemoon copy and paste code base lol: https://github.com/safemoonprotocol/Safemoon.sol/blob/main/Safemoon.sol

Lets look the events of Open Zeppelin’s ERC20 token contract:

ERC-777 is difficult to implement properly, due to its susceptibility to different forms of attack(opens in a new tab). It is recommended to use ERC-20 instead. This page remains as a historical archive.

This depends if you're writing a contract from scratch or using existing code. If you're making something new, then yes (recommend not to use THE most recent available, always better to go with tried and tested). For existing projects, never try to override the solidity version. This may be a pain with "@" imports - ideally everyone should specify the library version (e.g. https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.5.1/contracts/token/ERC20/ERC20.sol).