At least you can add the Works conversion in every car and they are all "premium" models. You right when you talk about the Challanger but there are Pros and Cons in almost every game.
" All premium models " Oh sunshine, if only. Take a look at the video's on youtube if you don't take my word for it, for a start Shift2 is in 720p

, vs GT5 in beautiful 1080p and the model's whilst they feature an interior view defintely come nowhere close to a premium model set by GT5 standards, although i'm excited too get a game with good crashes though, even if it is a blade of grass that caused me to flip i'm happy to watch it flip.
I'm telling you after playing GT5 Nurburgring in 1080p with those wonderful physics and then playing Shift2 Nurb in 720p with it's physics on offer you will be dissapointed and realise it's another NFS game.
However if you don't play GT for a week before you get Shift2 and then play Shift2 i think they experience might be enhanced a tad, but if you under stand driving and driving dynamics
you will notice the difference between the two in a very bad manner for Shift2 unfortunately.
The back of car's whilst night racing are blocky and frankly look awful.
If you ask me Shift2 looks like another game pushed out the door by EA to get $$$, they raved and raved about the new physic's engine it really it just a bunch of on-screen telemetry data trying to trick you into thinking everything is right when clearly through the steering wheel is not right, it's either quite good and representing over/under steer fairly or terrible,indirect and laggy feeling, it has it's moments but defnitely never think WOW that FF through that lap was intense.
You get good judders on rumblestrips and track bumps but they actual over/under steer feel that is portrayed through the wheel needs to be worked on absolutely...hopefully they patch it. FF is not what i was hoping with these over dramatic crashes, i thought we might get some dramatic dynamic feedback but it's just not there
Fun game to blast round in though, can't wait till more people online, although with these over-the-top crashes ( when you get the game and see how repetitive they can get) i have a feeling online will get messy with people just wanting to bump you and watch you flip 57.5 times , hopefully they Precision vs Agression matchmaking system works well.