Every altcoin that we encounter and we think that it's a good hold, we treat it as a hidden gem. But, I've found something that you would probably like and this just appeared on their coinmarketcap data.
https://coinmarketcap.com/currencies/district0x/markets
Check those asterisks that they've got on Binance and Bittrex, a special offer. For Binance, it's a 20% off trading fees.