[Jmstrmbn]

hi all, i currently own the hd 238 and while it sounds decent out of the ipod i really think i needs some sort of amplification too, in which case i decided to go after a combo amp/Dac and get the bithead for use with my Macbook as well; however im not sure if i should get that and be happy with my current phones, or if the ie7 will blow the 238 out of the water.  
 
I'm going to college next year so portability is a big factor but im mostly looking for sound quality the most im looking to spend either route is $200.  If you have any suggestions as to alternatives to improve my rig which atm is itouch 3rd gen > LOD > fiio e5 > hd 238    Im all ears
 
Thanks in advance for the advice