No way you can compare os 7,8,9 to OSX. OSX is the best thing I've ever seen. The security and power of unix/linux/bsd and the convenience of a mac with the compatibility feeling of windows. Everything is soooo well designed, there was very little learning curve. Coming from Linux, I find the power of the bash shell everything I wanted. I'm running my G4/450 as a web server for my kiteboarding forum (
www.flkitesurf.com), watching dvds, browing the web and generally just screwing around with no slowdown. No hiccups, no choppy video, no slow page serving, nothing. Installing software is quicker and easier than anything I've ever used, including the amiga.
I tried really hard to use my amiga for daily tasks and found it completely useless by today's standards. Windows was ok but always felt "messy".
OSX is wonderful. This is my slowest computer (others are P3/850mhz xp, P4/3.4ghz xp, P4/3ghz xp, P4/2.5ghz linux) and it runs smoother than all of them. I find it painful to look at windows now... it looks like it was designed by the tele tubbies, video is always flakey, programs stop responding, and the filesystem layout is just a mess.
So yeah, I'm converted. I'm going to by a mac mini G4 ($499) as my next major computer purchase.