When I bought my 2011 5.0 I was actually looking for a 2011 GT500 but went the other way after really thinking about what I truly wanted. I want to run 11's, be able to do track days, and have a reliable weekend cruiser (yeah I know, I already had this car with the 427R). I figured it would take sticky tires and a pulley/tune to do this with the GT500 or sticky tires and a tune/CAI/longtubes with the 5.0 here (don't quote me internet/magazine times from mineshaft air in New Jersey or New Jersey- I see what cars run here).
Anyway, at some point I realized I could get the 5.0 loaded up (plus a few grand for mods) for mid 30's or the GT500 for every nickel of 50 grand and came to the conclusion that a GT500 wasn't 15k more of a car than a 2011 5.0 for what I wanted to do with it.
Now, throw a 40k+ Boss into the mix and I might have had to redo my math.