Should I convert to USDT or USDC?

I'm considering converting my cryptocurrency holdings to a stablecoin, but I'm torn between USDT and USDC. Can you help me understand the key differences between the two and provide some guidance on which one might be the better choice for me? Are there any factors I should consider, such as the underlying collateral, market adoption, or regulatory risks, that could influence my decision? Ultimately, I'm looking for a stablecoin that offers a high degree of security and liquidity, while also minimizing potential risks.