There is no doubt about which Bitcoin is the best. There is only one Bitcoin, it is called Bitcoin, and trades under the symbol BTC. With all the tokens that are out there, it is easy to understand why people think there is more than one Bitcoin. There are three major tokens that have Bitcoin in their name, and there are also a few tokens that are a securitized version of Bitcoin.
Bitcoin is the original cryptocurrency, and it was introduced in 2009. The other two tokens that are based on Bitcoin, which are Bitcoin Cash and Bitcoin SV, are much newer, and don't have the same level of support. Bitcoin Cash is generally in the top 20 tokens as measured by market cap, and Bitcoin SV has some interesting features.
To be sure, the Bitcoin blockchain isn't perfect. It was the first one, and it wasn't designed to replace the entire global financial system. Because of this, tokens like Wrapped Bitcoin exist, as they operate on other blockchains that are faster, and may have other features, like smart contracts.
Despite its flaws, Bitcoin is still the most powerful token in the market, and it is the go-to crypto investment for many people.