Should I buy WBTC or BTC?

Hello there, I'm curious about your thoughts on a decision I'm facing. I'm considering investing in either Wrapped Bitcoin (WBTC) or Bitcoin (BTC) itself. Can you provide me with some insights on the key differences between the two, and perhaps offer some guidance on which one might be a better choice for my investment portfolio? Are there any specific factors I should consider when making this decision, such as liquidity, security, or potential for growth? Your expertise in the cryptocurrency and finance field would be greatly appreciated.