In today's economy, nothing is hot right now. I guess the better question is what is the least cold. Out of these options, Forex might be your best option, because if one currency goes down, then another one must go up. The same is not true for all the other options where everything can go down at the same time. I have started to diversify my accounts into other alternative investments. Check out this article, http://www.thefinancialfitnessclub.com/article.aspx?ID=1253 . The returns on the investments they suggest are better than you would be able to get from any of the above. I personally believe the risk is less to given the current state of the economy.