"After being entrenched in Microsoft Windows territory for many years, due to professional necessity and excellent experiences with the IBM/Lenovo ThinkPad product line, I decided to take a leap back into the Mac fold in February of this year. At the time I was still sporting a nearly four year old ThinkPad as my personal laptop, and while this was an absolute workhorse system, it was time for something fresh. On February 5, I walked into my local Apple Store and purchased a 13″ white MacBook, essentially the base model, for $1099. Certainly no beast with its low-end specs (by Mac standards), and only an 80GB hard drive, I was simply looking for a decent machine to take with me on trips, enjoy while not working, and primarily use as a way to "learn" Mac OS again."
Dave is a friend of mine who made the trip back to the Mac, and after a bit of a rough start he seems pretty happy with his Whitebook. I would say his experiences match most returning Mac users' experiences pretty well. A little bumpy at first (even with the occasional hardware failure) but after that, it's all smooth sailing. Mostly. Check out his article, though. Very well-written and well-thought out.