I'm a btc trader mainly looking to buy large btc volumes daily at -% but can also sell,
so you basically want a place to "trade" bitcoin since you both want to buy and sell. in that case using the popular exchanges is your best option if you ask me because although there is nothing safe to be found but they are safer than usual methods, the popular ones (like Coinbase for example) have high volumes so they can handle your "large" buys and sells and also their price is a lot better than any other alternative option and in a large trade having a price closer to market price is what you should aim for since any other option will have a higher difference which means bigger cost.
