Should you store bitcoins on a flash drive or a hardware wallet?

Hey there, I've been wondering about the best way to store my bitcoins. I've heard of storing them on a flash drive, but I've also seen people recommend hardware wallets. What are the pros and cons of each option, and which one would you recommend for keeping my bitcoins SAFE and secure? I'm looking for a solution that's both convenient and reliable, so any insight you can provide would be greatly appreciated. Thanks in advance!