Who has cheaper fees Coinbase or Kraken?

Can you help me understand which platform, Coinbase or Kraken, offers more cost-effective transaction fees for users? As a cryptocurrency investor, minimizing expenses is crucial to my overall strategy, and I'm looking for a reliable exchange that prioritizes affordability without compromising on security and user experience. So, which of these two popular options tends to have the lower fees, and are there any additional factors I should consider when making my decision?