CoinMetro is a regulated exchange for EU/US with fiat pairs and fiat ramps.
BTC listed, super competitive fees: 0% maker, and up to 50% paid from maker orders, and 0.1% taker. And get paid up to 25% on all fees (source).
A Trade Mirror system to mirror someone else’s trades, or make your own mirror.
I believe this is the best place to trade any main coin, including BTC.
Anyone know a place with better fees? Doubt it!