As i have said in other forums with the same answer, you will get conflicting stories until the cows come home, when trying to ask "which one should i get".
It really comes down to you. You know what you want to do with it and you know your budget, and i presume you are intelligent, knowing you want to go , so you know the biggest and brightest will serve you better into the future.
I know and do understand your predicament, and im not trying to be a a**, but it is human nature to seek out a HUMAN response to your question, than reading a review or such somewhere. (who knows if they tell the truth)
That being said IMO the MBP would win out in all circumstances. It puts you in better stead for the future and its a cool looking machine.
But think carefully and only you can make your decision
Cheers