Many individuals often ask me what the best options are when purchasing Visual Studio Team System products. There is no "right answer," and I certainly won't suggest the full Visual Studio Team Suite unless the higher SKUs are the right product for you. I've crafted a brief Purchasing Options Matrix document that helps guide you in this decision, specifically focusing on the decision from a pricing and purchasing viewpoint, not from a functional or role view.
I hope this helps some of you!
- David Baliles