RevBit stands out for its clean interface and strong focus on security. A lot of newer exchanges cut corners, but https://revbit.net/ seems to be playing the long game by building trust. The only drawback is that they don't support as many coins yet, but they're actively expanding their list. If you're okay with a smaller selection of coins for now, it's definitely worth a shot.
Who can suggest a good platform on which I can trade and exchange crypto?