RE: 2010 Mustang
Seeing as an R/T isnt much if any faster than a GT (which presently costs a bit less) in the first place then Id say competition is pretty stiff in that pricerange already. Now if were talking GT vs. SRT8 - nother story. But then there is that little price difference issue.
Speaking as a de-facto representative of the mustanforums (lol) I can tell you the biggest disappointment is the lack of powerplant changes. They slapped a $600 CAI/Tune on the same powerplant and called it good. It could be something to due with the current economic realities facing Ford. Or maybe the new powerplants just arent ready yet. Hard to say.