If your using MG, the Only altcoin you should be mining is Monero. None of the other coins come close today and FCN was a turtle even when it was merge mine-able (XDN was the better choice back then). Don't waste your hash mining a coin that doesn't have a strong community behind it, FCN may never return.
My next edition of the Monero Difficulty Watch will be posted tomorrow. You should follow and check it out. Here's a link to the photos: