I just bought P90X and have most of the equipment needed for it. My question is do I need to buy the Bowflex Selecttech or Powerblock dumbbells? I would love to buy one of these dumbbells but they are out of my price range even after looking at Craigslist and Ebay still out of my price range. I would like to go to Target, Walmart or any other sporting goods store and purchasing some free weights. I think that will be a cheaper option for me. Since I will be buying some dumbbells what are the weights I should be buying? In case you are wondering I am 28 years old and 5'8" tall. I don't want to look too bulky or too lean somewhere in the middle. Last question but certainly not least. I bough the Iron Gym Extreme pull up bar. The tool that comes with it is a joke. I know I can build it with that tool it came with but it takes so long to build it. Anybody know any good hex tools I can use instead of it? Any help would be appreciated. Thank you.