It is better to trade an altcoin which is reputable one.
Like C-cex,bittrex, & poloniex these sites are legit
and trusted. Never use trading site thats is not popular,
were you might lose your btc.
this op ask about minor exchange altcoin
so this op want information another big exchanger altcoin poloniex bittrex or c-ce
i think the best minor exchanger, outside big altcoin exchanger, cryptopia