I just upgraded to Jag in November from 9.04. Man, what a revelation!!!!! 9 was always dying on me, I had to reboot almost as much as my windoze machine at work. A few weeks later I bought an Iomega CD burner. I was told it would work with OS X just fine. The installation CD said it wouldn't. I plugged it in anyway and the radioactive thingy in iTunes was all lit up and ready to go without installing any software. Same with my logitech mouse, my canon mini dv, and my digital camera.
OS X looks awesome. I was a little hesitant at first. It looked like some kid gone mad with his crayon box. But whenever I have to switch back to 9, I think, man, what a boring, boring, boring, GUI. It is so bad it is almost depressing.
There are things that I don't like about it but yes, after 2 plus months, I'm still in love with OS X.....