May not be the proper place for this question, but I'm new to Mac and one of the guys in the store suggested that running Parallels is better than windows in a partition with bootcamp.Are any of you guys running either of these? On the new MBPr?
Parallels (or any VM solution) is excellent because you don't have to leave your native OSX behind. If you plan on using OSX Mail, Safari, Calendar, Contacts, Notes, Reminders, Messages ..., it's a PITA to have to totally reboot out of Windows (bootcamp) to access them.
Bootcamp will be faster than any VM (since it's basically a native Windows install), but you lose quite a bit of flexibility....
When I decided to go Mac, I knew I wanted to use OSX as much as possible, even though I knew I needed to deal with Windows for a few apps (all for professional needs).
I also wanted to be able to share resources between the machines (files, peripherals, etc.), and I knew I wanted to be able to VM a few other environments too (CentOS for example).
As far as specific VM solution, I originally went Parallels because I liked some of the operating modes like Coherence (that puts Win and OSX windows on the same desktop) and the performance, plus a few other features unique to it.
I'm currently running a trial of Parallels Desktop 7, since my PD6 (that I purchased) won't run on Mountain Lion. PD7 feels a bit faster vs. 6, but I'm a little unhappy with having to pay a $50 upgrade fee. I'm seriously considering VMWare for $49 or even VirtualBox that's free (though not as feature rich as PD or VMWare).
FWIW, I run VS2010, IIS, Oracle, MS/SQL, and several other development tools in my VM while I'm running several apps in OSX (Mail, Safari, iTunes ... sometimes Netbeans, MAMP, Cyberduck) and it runs smooth as can be.