My personal preference is Final Cut Pro. I like the stability, I like the fact that it runs on OS X, which is my preferred OS, and I like the integration between all of the apps that come with it - Compressor, Soundtrack, DVD Studio, and Motion. Premier is excellent, but it really all just comes down to what you personally prefer working with.
My other hobby is Hackintosh, so I can tell you the basics:
1. You need to choose very specific hardware. It won't run on "just anything". If you buy computer parts with Hackintosh compatibility in mind, you'll be much better off.
2. Updates are tricky. If you only want to run Final Cut Pro, then you can be just fine at the current OS X release (10.5.7) for years and years, since you rarely need to update a video editing machine.
That's really it...if you pick the right hardware and aren't stupid about updates, a Hackintosh works just fine. You can save a lot of money over a Mac, and if you decide you don't like OS X, you can just slap Windows on it no problemo.
Please read this before deciding on a Hackintosh:
http://leopardsoup.pbworks.com/survival