Final Cut Vs. Avid?

Im looking into getting a Mac mainly just for editing movies, but I am new to the game altogeter. I am still learning about what I need to buy. Really at this point about all I have is money and a dream. I have heard all the hype about FCP and Avid my question is which one is most peoples preference. Which one is more user friendly for a first time user, and which one will offer the better learning experience to apply to future projects. I also understand that I-movie is similiar to FC-express is this true?