In case you didn't notice, I wrote a GPL'd Mac app called CSV-to-HTML back in '95. It's still available because, well, why not? It is more or less worthless now but I needed it really badly in 1995.
I have been using Macintosh computers since 1988 and I find them to be the best desktop machines around, despite their very real shortcomings. All in all they still kick butt. I'm warming up to Linux with KDE, but they aren't as slick as a Mac, yet.
Kim and I both have Power Mac G4 desktops. I also have a Power Computing PowerCenter 150 (150 MHz PowerPC 604, yadda yadda) and an Apple Power Macintosh 7500/100 at home (originally 100MHz 601, but upgraded for $179 to a 150MHz 604 a year or so ago).
I have a ton of MacOS software and knowledge - and I like the fact that under the scary leadership of Steve Jobs, good things are happening to the OS and to the hardware. Apple definitely has had its head up its rear end for about 5 years now and although I am not a big fan of Steve Jobs, he is getting results. The new PowerBooks look very sweet, and the G3 Macs are nice too. I especially like the down-and-dirty ads...
Lately I have been using Red Hat Linux at home, and it's very nice, but the UI isn't too hot. The Linux Control Panel is ugly, a lot of UI principles like feedback, hysteresis, etc. are missing, and in general it's got a way to go before it can overtake Windoze. As far as technical excellence Linux kicks the MacOS in the pants but it's still clumsy to use sometimes. I tried Enlightenment, but the virtual desktop switcher sucks, and it clobbered my 32MB machine with all the graphics (not really its fault I guess). I am using KDE now, and it's better, although it lacks convenient keyboard-based virtual desktop switching and it's much too easy to go near the edge of the desktop and switch, and get lost in the gutter, flopping back and forth. It's pretty damn close to excellent, though. Until then the MacOS still wins.
I have also downloaded LinuxPPC but I haven't had a chance to install it yet. I'll keep you posted!