I really think it all boils down to simple math. 426>304. 8>6. The LS3 or L99 wins every time when it comes to performance. And don't give me that "well once I put a turbo on my v6 it will make more hp" because now you are comparing apples and oranges. I'll put a turbo on my v8 and be that much more ahead. Keep reading before you v6 guys get pissed.
I for one think it speaks volumes for technological advancements that a v6 can make 300+ horsepower and get 25+ mpg. There is nothing wrong with getting a v6. I agree with every "pro" that has been written about the v6 as they are all factual. In fact I have been considering replacing my truck with a v6 Camaro because I'm not sure I want to sell my 79 z or 95 z. This route would let me keep my 'toys' and get a 5th gen as a daily driver.
The v6 is an AWESOME motor and NOTHING to take lightly. It's just not a v8.