So which one would I pick? well, it depends on the project, the platform, and the amount of code I can reuse from open source libraries.
What is wrong with you? You have to choose you insensitive clod, we are on Slashdot! I bet you have both Apple and Windows machines in your house!! Maybe even something that has "Linux" on it. Quick! PS3, XBox, or Wii?
Remember Darwin; building a better mousetrap merely results in smarter mice.