Finding the most profitable coin can be a very daunting task. Some things I look for when trying to determine this is the reward, the reward time, the network hashrate and the difficulty. When i am looking for an alternative to mining bitcoins and still be able to get a big profit, I Like a coin i get earn a lot in from my mining rigs. If it has a nice low difficulty that my machines can process 1 to 3 reward Blocks every 5 minutes I will solomine that coin. I like new coins because you a earn a lot but it makes it hard to hold them for a value increase because the coins always have a much higher value than their worth upon release. But if you can find an older coin that still has a low difficulty and a fairly stable price you can mine a bunch of them and hold them for a month or 2 until the price goes up to where you are satisfied in selling them for a profit. It is also nice to have a lot of POS coins if you can, that way while you hold them they earn coins for you. I love POS and POW coins especially if they are both. That way i can mine them, and still hold them and its like double earning on the coin, you mint them in your wallet from the coins you mine off the server, its like a win win coin. There are always a lot of different ways to earn Bitcoin from a machine you own or rent, the trick is knowing what to mine when to mine it, and when to sell it for the maximum profit.