Originally Posted by Legion5
1. Get an individual color, there's nothing like a Atacam Yellow, Frozen Grey, or Shakir Orange M3. If you're going to make it an expensive car make it rare and nearly one of a kind for a small fee.
2. Get extended leather. It's an 80k car, it deserves to have leather instead of plastic trim.
3. Try the dct. It's a formula 1 type transmission and has converted many many manual owners. It's simply epic. Just try it.
4. Carbon leather trim. From an outsiders perspective all the trims are made equal, but once you own the car and see carbon leather trim far too many people crave it. It is much more valuable than the other trims and can easily be traded if you change your mind and can be installed by a 5 year old.
DO look at used options. Like others have mentioned here, prices will drop with new models coming out, so you will end up saving tons of money. Most people with M3s take care of their vehicles, so I wouldn't be too worried about that.
If you do end up buying new, PLESAE do Performance Delivery or European Delivery! I did a performance delivery and it was a blast! Totally worth it!