The way I look at it is. The price must go up with the rise of difficulty. When it costs more in electric to mine a coin then then that coin is even worth that is IMO when the price of the coin must go up or fail completely. Nobody will continue to mine at a loss for a long period so there really is only those 2 options.
For the next year there is too many variables that are unknown making it impossible to make any sort of prediction.
We don't know what kind of chips with low power efficiency will be released, we don't know how much per kw electric will increase, and we don't know the level of difficulty increases each term.
That said, I would be happy with 800-1000 by the end of 2015. That not a prediction but that is just what I hope for. Of course I would be thrilled to see even higher numbers.
This is why miners don't get to choose the price!
Price does not follow difficulty. Difficulty follows price. If the price drops below cost to mine, miners drop out and difficulty drops to equilibrium. When price rises, miners start mining again and difficulty rises. What is so difficult to get about this? This is a tired subject that has been hashed out 1MM times before.
