These are great, and actually deserve more credit than I was giving them.
 
With a view to upgrading, I tried my SR80s out against AKG K701's, and Grado SR225's. If you're interested in what I had to say, check out the thread at http://www.head-fi.org/t/698953/grado-sr80-to-akg-k701-an-upgrade
 
Thanks