Steve,
I have been a diehard GM guy all of my life and I would say that out of all of the cars that I have collected over the years, 99.9% of them have been GM products. Yes, I do like the artists rendering that you posted and do think a LS7 would be a great car and would probably buy one, but it doesn't look like they will be out for at least another year or more.
While I have owned several Mopars, I have never owned a Challenger before. These will be my first two ever. A good friend of mine has a 49k mile original paint matching number 1971 Hemi 4 speed RT/SE in Plum Crazy Purple with a white vinyl top that he bought from the original lady owner in 1972 and I have to tell you, it is one sweet car. I believe the new one will be pretty nice too and at least give me something else to play with until the Camaros make it into the market.
The general concensus over at the Supercar site seems to be that those diehard Supercar Guys like the Challenger more than the Camaro. Check out the following two links to see what they have to say about it.
http://www.yenko.net/ubbthreads/show...rue#Post217551
http://www.yenko.net/ubbthreads/show...rue#Post236688
While we all have our own opinions, I will say for the record that I really like both. After driving both, I will obviously be in a better position to make a final judgement on that. Thanks for the pic!