i honestly don't know about mining but i like etheueum i think until now etheruem is to be less undervalued i dont have general statistics but i think it is the future of altcoins.
I agree with you ethereum is the best altcoin and i think it will be the best until in the future, i am a solid fan of ethereum because ethereum is more affordable over than bitcoin right now, and holding our ethereum can for long time ca make us also rich in the future, and i am also supporting litecoin because the price of it is starting to increase so for me it has a good future too.