From what I hear the kits have their ups and downs. On the upside of things, you can change the look of your interior without a lot of money, and don't have to worry about getting it back to "stock" when its time to sell.
On the downside, the peices don't always fit right. They leave gaps in bewteen places that could easily have been covered with paint. For example, around the window controls and auto door locks.
But, the choice is up to you. I was gonna get a kit at one time, then the research came in, and I decided that painting is the way to go. I am gonna have this car for awhile, and when it comes time to sell, I am hoping that I can either find parts in a junk yard to replace them to original, or just trade it in for what its worth as is.
Hope this clears some things up for ya.