Who has the best new/pre-owned car deals in Dallas?

[Greg]

My car is on its way out (11 years old, hard life in Michigan and currently has a fuel injector issue) and I need a car, quick.

I'm young (24), have decently bad credit but could get a co-signer in a pinch if I need one, and have little to put down.

What dealerships have the best offers right now as far as trade-in value, financing/lease rates, used vehicles etc etc??? I admit I could do all this research myself but I have to do this QUICK (within a few days) so any help would be appreciated. Actually at this point I'm not even sure what my best path would be (new/pre-owned so any advice there would be appreciated). I'm new to the area so I don't know where the dealerships are even.

Again, any help at all would be appreciated.