I have to say the price of the car won't bother me as much as gas prices to keep the 6.1L fed.
Getting a fully decked out RT with a 5.7L /VCT may make more sense for me - since I want to keep the Challenger a long long time and put a lot of miles on it. Especially if Chrysler keeps there lifetime warranty program running. If I want more power from the 5.7L there are plenty of options available...
Of course I'd change my mind in a heartbeat if I could get a bigger motor with VCT