For now i mine BTC and ETH
These are very very good coins! Please stay with it because are very stables and price for BTC & ETH will increase for sure (i think ETH will pass $1000 by end of 2018, and BTC $25 000).
Also Litecoin was a good increase ($98) and are good to mīning, but no much profitable.....is much better to invest in.
Trashcoins:
You can mine new release coins and sell ast (most of coins don't have a future)....
I can give you an advice:
Inveet in CryptoRuble then release (unknow date) this will be Official Russian Cryptocoin!😉
https://techcrunch.com/2017/10/15/russia-may-soon-issue-its-own-official-blockchain-based-currency-the-cryptoruble/
I'm really interest about your electricy cost, thanks!