I've been developing on lots of platforms for many years, but mostly have preferred Apple platforms because I liked the UI, and because I liked the API. But I have never liked the company behind it.

I'd rather code for Haiku (http://www.haiku-os.org/) however I don't see a way to get paid for it yet.

I'll get back into Linux. I've tinkered a bit with the Linux kernel and drivers. I have the O'Reilly "Understanding the Linux Kernel" and "Linux Device Drivers" books. I'll read them, I have some ideas for the kernel I'd like to try out.