Just came back from the Apple Store and they don't have the 17" Intel laptop in yet, as soon as they do I am a buyer. My 17" Powerbook has gone three years of 7x24 operations and 90 minutes on a bicycle daily. My last Dell died three times in two years.
With the new software from Parallel
http://www.parallels.com/ the issue of legacy Windows apps is resolved without dual boot. OSX is BSD rock solid and less grief than any XP computer I have seen. My goal is work not tinkering with software.
No antivirus software, No anti spyware software, no defragging; much better experience all the way.