I believe c-cex, Bter are good places to trade. Both have a good security and are nice places to trade.
Both are trusted, can't go wrong with them.
c-cex is the worst platform for trading anything.
it has the worst design, it does not look good or easy at all.
worst of all is its API, it is total crap. you can't get and easy orderbook. and worst of all is the 5 second mandatory delay between requests.
and don't get me started on bter, after the stolen 7170 bitcoin the exchanger is dead.