I guess both of you meant Cex.io. I never heard of that supposed "exchange" mentioned above. For correctness, I looked it up on exchange sites and I ain't surprised anyway that I didn't see it.

OP, you best check should be on the first 10 exchanges as listed on the CMC or Coingecko site. Make your pick from them. But if you want my recommendation, go for Binance exchange. It's the most trusted and most assumed to be the most honest, for now.