I have been a longtime PC user, and finally will be switching! Forgive me if this is the wrong place to post, as this is unknown territory for me. But I have a few questions to which I have not been able to find an answer to before switching. 1. Is Microsoft Office for Mac 2011 100% perfect, without any distortions when opening a file saved from a Windows PC? 2. How much distortion is possible if opening a Office file on iWork? 3. Is the built-in antivirus or whatever in Mac OS good enough to detect any viruses for Mac? How good is it? 100% detection or less? 4. Since Mac OS interprets 1 GB differently than Windows, is there a discrepancy when I download something, say reported 4.2 GB online but after downloaded reported as 4.x GB? 5. Is it true that HFS+ is more efficient in storage than NTFS and therefore can store more data than NTFS on the same sized drive? Heard it from the local Apple Authorised Reseller guys but no evidence online. 6. How efficient in storage is Time Machine? Does it make an extra copy of a movie every time I watch it? What about plays in iTunes? Does it make an extra copy of each song every time the number of plays increases?, etc. 7. Will I be able to use all my backups of my iPod touch as usual after the switch if I copy them from the PC to the Mac? 8. Will I be able to boot tethered from my Mac after jailbreaking on the PC with redsn0w? 9. Will the hard drive being 87 % full slow it down? 10. How much usable space (in both Windows and Mac terms) is there on the 500 GB MacBook Pro refresh minus iLife, Mac OS Lion, etc.? 11. If I want a 80 GB (according to Windows calculation of 1 GB) Boot Camp partition, I need to make an 85.6 GB partition from the Mac Boot Camp Assistant right? Thanks!