You have mentioned some of the exchanges that their coins are doing well. No doubt some of these exchange coins are doing fine, but the ability to catch them when they are still at their early stage. Numerous exchanges lunched in the past and many of them have gone under the radar and they are no where to be found. Investing in an exchange coin does not guarantee profitability. Like the case of Fxtm and many others, investors lost money and many more. But if one can get an exchange coin that's reputable from the very beginning, it will be a good investment. But the challenge is knowing which exchange will stay and do well.