If you've programmed on both OSs (especially recently):
1. Which OS do you prefer to develop on and why?
2. Which development environment and/or tools do you uaw? What's your front/back-end setup?
3. Do you develop on your own, two-four people, or in a larger team?
4. Do you program for a living, for fun, or both, and have you contributed to any open source projects?