I have had my MacBook Pro for right at 8 months now and though there were some up and down times, it has overall served me very well.

I suggest reading this if you are serious about switching. It gives a realistic view of what it is like to switch and some hurdles you will have to overcome.

For me, the reason to switch was simple, ease of use and ease of travel. My laptop bag is extreme small and fits the MBP like a glove, which is perfect since most of my flights are day trips to clients. The battery lasts an entire meeting, even under heavy use, and I can run all of my essential applications at the same time without worrying about memory (granted, I upgraded the RAM).

When I plug it into an external monitor I have no problems, it hooks directly up to a projector with no problem, and for the most part, it just works.