What do you think about coinexchange.io?suggest coins one can trade on...
The only reason that you would use their exchange is to trade lending platform tokens. Lendconnect, regalcoin, davorcoin. You've got the whole package there. Bitconnect has obviously already been fallen, but coinexchange seems to have no problems about listing lending scams, and they're making most of their trading commissions from listing these ponzi schemes.
That alone should demonstrate to you how untrustworthy they are. They're providing a platform for scammers to do their thing, basically. They could scam your deposits any time they want.
Buying big altcoins from them is going to be expensive. Sell orders are going to be much higher than market, and buys are going to be much lower than market price, because of the low volume with legitimate coins.