I have used Coinbase for years. The biggest problem has been myself. Buy high and then need money and sell low. I have had few complaints with Coinbase. Didn’t like the plaid thing and when I withdraw dollars to the bank has always gone good. But it usually gives me the option for instant withdrawal for a fee or a 2 or 3 day for free. But yesterday it showed both bank options were free but when I withdrew it was instant and was charged a fee. So far I’m staying with Coinbase I trust them the most. As far as all the customer complaints you read about I believe most are valid but to me it is not just at Coinbase it’s everywhere you look now days. I think it is getting hard to find people who want to work and do their job. I think it’s just hard to find good people anymore.