I've been using Kraken for a few years now. Until lately, I had a positive experience. Due to their equipment failure, which caused the price of various currencies to plummet anywhere from 30% to 80% below other markets, my whole account was liquidated. I was liquidated into a negative position due to my inability to get onto my account and cancel orders or even deposit money. It is far from the truth to claim that they have the highest liquidity of any other exchange. Customer support can only be reached through a reddit thread, which is a terrible way to conduct business. It's been over two weeks since I've had any help. If you want to learn more, go to the Reddit help page.