No, better not use an instant exchange. Classic exchange are better: bittrex, coinbase or, but never used, binance. Ok, is not a scam, but 35% of taxes are so horrible and is not a fees question
Actually, if we examine in depth, it is very reasonable to apply because instant exchanges provide an easy way to exchange for a slightly higher fee, but classic exchanges also provide good services on several other things such as asset security and transaction fees. which is slightly lower, meaning the two exchange models are equally good.