It's hard to suggest something that's so opinion based.

I've heard an Apex`I World Sport and don't consider it bad.

Depends how "deep" and "non ricey" you want... your not going to get a v8 sound out of a 4cyl car. Even if you could, it would just be stupid. Like a Barry White voice on Madonna.... it's just not right.

So... just listen around to diffrent peoples setups. Keep in mind also that what's on their car is not always exactly what you'll hear on your car.