Help me pick out my first Audi.

I'm a teenager getting my first car and I love Audi. My dad is looking to spend in the ballpark of $25k. I've become attached to the 2009 A4 Quattro (2009 because of the new body/lights), but that is the only one I've test driven. Am I missing out on any other sub $25k Audis that will be dependable and get similar gas milage to the A4 (maybe a few years older?), or is the A4 the right choice.

Looking for: ~20mpg, reliable, good looks.

Thanks in advance.

Edit: only