You realize that you can use the same copy of Visual Studio twice, right?

As in "Today I'm going to write this new web app, as soon as I install Eclipse, Django and SVN" would sound just as silly. It's just development tools.

Oh, and for what it's worth, Microsoft will give you 15 seats worth of MSDN Universal for $400 if you tell them you're a small business. Per seat, the MS tools are the cheapest part of setting up a new dev box for me. (CodeSmith, ReSharper and Ants Profiler are the ones that hurt!)