Actually I have 3 word processors - Open Office, Word, and Pages. Each of them are decent products (although Open Office still has some rough edges to remove on the created for the Mac native UI).
Although Macs were not foreign to me, the first mac I purchased was the Macbook Pro laptop last year. The "premium" was around $300, over a similarly configured one from Dell. My last laptop was 3-4 years old from Dell, which also was a reasonable laptop (also around the same price).
I looked at Vista, and was not impressed. Actually, other than one other person at work - I have not heard anyone really like Vista.... in fact a number of people that have bought laptops with Vista installed - tried it out (some up to a few months) then decided they wanted to move back to XP.
The selling point for me was not that it was a Mac, but that it was a flavour of UNIX (with a custom UI). I was really looking for a new laptop, and if Dell had officially supported Linux (they have a few laptops officially supported - but nothing in the league that I wanted). I have also found that a number of devices on laptops can be problematic when it comes to Linux support -- especially when it is a fairly new configuration (Wireless support last time).
That left the decision squarely in the area of the Macbook Pro, but up until a year ago they did not have the 1920x1200 monitor (and I really did not want to go backwards in resolution - since that was the resolution on my old Dell laptop). Apple came out with a Macbook pro last year with this resolution - so that was the one I chose.
I have been very happy with the macbook pro - I just wish it would handle four+ external monitors....