The most coin I trade is bitcoin pair usdt, but I also trade altcoin pair bitcoin to increase my btc. So far, I usually trade ethereum, litecoin, xrp, and the other cheap coin price. But sometimes, I trade altcoin pair usdt too if I see the price can start increase and it would give me an extra usdt. And if the market shows good movements, I think my profit will increase too, and so far, I can get a nice profit from my trade although I don't trade for daily.