Before I get a new Mac...

[Viro]

1. I mentioned the G3 because its the oldest thing that can run Leopard and wanted to know about the slowest thing Leopard can run on. I am definitely buying one of the current models.

You're trying to run the latest version of an OS on a machine that is over 6 years old? If you're not going to run OS X on a G3, why does it matter?

2. I am asking how does Mac OS X compare to other OSes in terms of performance. Someone was mentioning about OS X being much more better on doing multi-tasking and how he had around 20 applications open all the time and he could manage them easily. Of course, it runs super-fast on a Mac Pro. How can it not?

I'm sorry, this isn't 1988 or 1998. It's 2008. What OS has trouble multi tasking?

3. I also want to know some of the unique selling propositions of Mac OS X, so that I can fell a little superior over others when I 'go Mac'.

Man ... I don't know whether to laugh or cry when I read that.