Whats the BEST CASE that allows me to plug in any headphones i want

[avpmusik]

i looked at all the cases my local best buy had, and they dont seem to have any cases that do not block the headphone jack..

i mean, when i'm in my car, i like to use my headphone jack and plug it straight into my AUX input of the car, but it seems like the cord that i go plug in is too 'thick' for my current case (ifrogz) is there a case out there that protects the back/sides but dosnt cover up too much on top?

 

[Slip Jigs]

This should go in the iPhone Accessories section.