You definately came to the wrong place for UNBIASED opinions
I had a '07 base coupe that I bought new in April '08 for 18k. I had no problems with it...except for some lady smashed it in April '09...
I now have a '05 SRT...which is obviously a bit different than the base/ltd models...but some things I have noticed and 99.5% of the people will tell you...
cupholder = useless
I personally do not like the Nav that is equipped on mine (don't know if it is on yours or not). Just not very user friendly. Seat heaters seem to give a lot of people problems and stop working (most have gotten fixed once and had no further problems with them).
I think the stock ride height is a little high in the rear, but that is a personal opinion and does not translate across all users on the forum.
Other than what was previously mentioned about the condensation on the headlights...there are not too many problems that are not unique to the individual owners car.
some have experienced trouble with the crank position sensor and most SRT owners see IC pump failure between 15-25k miles.
I'm sure you will love the car... I would keep an eye out on cars.com or autotrader.com or vehix.com for a car that may have lower miles and be for the price you were looking to spend..
Research is the key and there is no better place to start than this forum.
Happy hunting. Keep us updated if/when you make a purchase.