I tried almost all exchanges and I like Bitfinex the most. It's not so intuitive at the first glass yes, but, when you get used to, you'll not want to switch unless for other currencies (they have just a few crypto listed). For example, to cancel an order on Polo you have to manualy check it from the table, but on Bitfinex you can even do it from the chart. I'll write a detailed post on how to use it. Thanks for the feedback 😘