well first off...welcome to the lair! your in good company here
Secondly the choice is all up to you...look around here & you'll start getting some ideas. Alot of the guys here do customs (myself included), but there are more people that try & do movie accurate ones as well. so in the end it all comes down to your own tastes & expertise (or in some cases, bank account ). Good luck on your build & if you need any advice or tips any of us here will be more than willing to help out where we can.