Sorry but I don’t think the Mac is worth the extra price for minimal extra function. Software is more available for PCs and any new software developed is almost always ahead of the same for Apple.
As a side note, a very good friend had a 3 year old Mac; it crashed, even with his backup external drive, no company out there could retrieve a single item from the Mac drive. He lost months of work, and scientific data. Mac is pretty to look at and has nice graphics if that is that is where you place value in a machine.
Drive Savers, as with all credible data recovery firms, will recover information from Mac (Journaled HFS formatted) drives exactly as they will Windows (FAT, or NTFS fomatted).
A situation that might hinder that is if the user turned on disk encryption -then, if you lose a portion of the disk, you might very well lose the whole thing. This is the SAME under Mac OS X AND Windows.
Macs and PCs use the same exact hard drives in them. They both fail at the same rate, and it is equally stupid to not back up either system. The difference is that Mac OS X has a "simple as pudding pie" backup feature built right into the operating system.