There are so many exchanges that sometimes is really hard to choose. If you are not looking for top tier one but would like to try something different you can check Atomars. The main difference is that they offer Free coins feature that you can use to earn decent amount of money. They are also introducing lot of alts that cannot be found anywhere else. Contrary there are a lot of alts without liquidity or high entrance costs (i.e. you have to own a lot of it to even put in order). It is not so well know exchange so there are not so many users which means that the overall liquidity could be little bit troublesome.
Their fees are reasonable. There is no other option above the spot exchange such as futures (or other derivatives). I really like their portfolio feature which you can use to track your holdings without need to switch to some external application but there is a room to improve (some UI glitch etc.). Worth to mention that some features are still develops such as refferal program and staking (only one coin) which is quite bothering and unprofessional.
Overall it is worth to try as there is always a chance to get free crypto but still with a room to grow and improve.