So i was just trading some bitcoin on one of the exchanges. I spent about 15 minutes looking at how all of the top currencies were trading against the Bitcoin, and then I made a decision on one that I thought had some more upside potential in the near future. I don't really pay any close attention to what the current price is... but what I do know is how much USD it was worth. Also, look at some of the alt coins as derivatives of Bitcoin, especially when they are trading favorably against it as the price of Bitcoin in USD continues to climb.