New car, 4 door tuner

I finally am in the last stages of getting my liscence back. After owning a probe and needing a good gas car, better than all my trucks, I am looking at tuners. The wife wants a four door. I have looked at sentras and maximas, cavaliers, integras and a few audis. I am a big nissan guy and prefer them. Any other ideas I may be over looking? I am looking to spend 3 or 4 and am open to anything.