bittrex or yobit is the best place to selling your altcoin i suggest such that because i think those exchange are trustworthy currently
thank you for your suggestion .. i have already done using
https://shapeshift.io/ little bit less i get ..any place where i get more
shapeshift charges additional fees where i think there is just trading fees on exchangers.
depending on your amount you can use a lot of different exchangers.
use poloneix or bittrex for best prices.
you can use yobit, bleutrade, cryptipia for smaller amounts 10000, 1000, 500 satoshi minimum trade respectively