What car would be good for me?

Currently I have a 1996 Honda Accord with 206k miles. I just got done with doing a trunkload of repairs. This car is definitely falling apart. I've been looking around for quite a while. Cars like the Lexus IS-F, Pontiac G8 GT and the Dodge Charger R/T (2012+) have caught my eye.
If you didn't catch the theme it's powerful 4 door cars. Preferably V8 naturally aspirated $45k and under, however a better value at a lower price is preferred. If there really are no other cars like these I'd like to hear your input on the aforementioned cars.

Please and thank you.

Mercedes C Class
BMW 3 Series
Audi A4