Good luck with the Cobalt SS Fastmike. I'm actually doing the exact oppositte. Going from a Cobalt SS S/C to a Solstice Coupe (in 09).
The 08+ Cobalt SS with the LNF is getting good reviews, complete with the awesome engine, FE3 suspension, track modes, no-lift shift, better bolstered sport cloth bucket seats (although I prefer the leathers on mine with red ultralux inserts) and more...
There's a ton of aftermarket potential and will be for the new turbo in a year + and I reccomend joining cobaltss.net to get plenty of info from them, just like here they are a great group of men and women.
Just to let you know some of the expierences I had with my Cobalt SS S/C I had no problem with the engine and trans (except for a crank sensor that went out on me @6k miles)
The interior I've had some problems with. My shift cap snapped and came off. I had a rear clothes hanger break, carpet has been replaced twice where my foot rests on the clutch, I had a plastic rail break on my moonroof, and it wouldn't shut and seal (all these were fixed because the car is under warranty)
Oh and the thing i'm noticing now on the doors where the door locks and and window buttons the satin trim is starting to peel off.. My car was leased in May of 06 so it's only a little over 2yrs old. It's a fun car and can handle like a dream, although because it's FWD it's got some understeer, but I'm a frequent autocross driver, so I reccomend getting some better tires and you will be all set.
I was planning on getting the 09 SS turbo but with the minor quality issues I had I don't want another one, and I want RWD, and well seeing the Coupe made me want it.
But I think you will like it. Good Luck!
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Current Car: 06 Cobalt SS/SC
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