Trade software (stock exchange, financial analysis, legacy, third party utilities) developers often only cater to the largest market out there: the Microsoft hegemony. Although 

And the first one now
Will later be last

The Times They are A-Changin’. mostly because of the iPod’s and iPhone’s popularity, the design of the Mac and the overall flexibility and robustness of the Mac OS X feline releases. Tigers and Leopards are eating up market shares.

Read this fascinating article on Apple’s recent progression. The most dramatic aspect of their inroads are in the sales and profits they are making in comparison to Microsoft’s. In terms of OS installed base Microsoft has roughly ten times more but, in terms of profit, Apple is making a third of Microsoft’s (hardware and software combined). Microsoft is selling about 770,000 VISTAs a month and Apple is selling about 1 Million copies of Leopard monthly. Count me as both a Mac and Windows advocate when foes coexist… where do I fit in? I just think one should always consider the best tools for any given job, setting aside a priori opinion. I’m buyest for my personal computing but that’s another story. (end of intro I guess)

I picked Parallels over Bootcamp because I wanted the Mac to coexist with its PC foe to fight it out for CPU cycles. Yes this Mac is big enough for the “boot” of them. I recommend 1 Gig of RAM for Parallels as anything under that will make you wish you had chosen Bootcamp.