there is no "best exchange" there is the best one for what you're actually trying to do. stop tier-listing and start asking the right question

The best cryptocurrency exchange depends on the user's specific needs and goals, such as simple fiat transactions or trading derivatives. Different exchanges are suitable for different purposes, and self-custody with a decentralized exchange (DEX) is often the right choice for medium to long-term holds. Users should consider factors like fees, execution quality, and token availability when choosing an exchange.