eth imo looks hot now for mining.
not anymore, there are better alternative, even spreadcoin is slightly more profitable
diff is still increasing on average
where do you calculate what coins has the most profit?
it's easy, you look at the net hashrate, then you divide for your hashrate
then you do the math about the total coins produced by the network, based on the block time and block reward
and divide the total coins by the ratio you get from nethash/yourhash, and finally multiply the number of coins for the price