What crypto exchanges can you recommend?
A lot of them are really good. You just have to to check them out and know which one is better for you. Maybe you should go for Binance, if youre interested in an exchange that charges less fees for transaction. I will also recommend OKEx, its a good exchange and I think it is under regulation. I also see some people mention Poloniex, but I havent tried it, many has labeled it as a scam.
Yes it all depends on the needs we have because there are no perfect exchanges. we must be able to take advantage of every advantage possessed by the exchange, in my opinion reputation and security are important. For the issue of transaction fees I will not be afraid, because in my opinion security is a top priority. If there is an exchange that is very cheap, it will not mean if the exchanges do not have a good level of security. Make sure we choose the best and never be tempted by any services that are announced unclearly !!!