Audi A4, Mercedes CLK, or BMW 328i?

[Lordblood]

Yes, this has nothing to do with a Boxster, but I wanted some opinions because my sister just got a job and now needs a car to get there.

She's looking for a used, 18-24k region. She said since she already can drive my Boxster, she isn't interested in a convertible or 2 seater. So we narrowed it down to those three.

I like the BMW best because it's the remodeled version, therefore has more standard equipment such as an AUX port which is pretty important as my sister lives in her Ipod. That plus I hear the 3 series is quite a nice car to drive.

Just wanted to know what you would go for and why. The A4 is going to be the last generation, which I hear has nasty electrical problems. Not sure on that though. As for the CLK, I think it's a nice car but my sister doesn't like the interior too much (she doesn't look wood apparently).