Weellll.
I demo'd (In shop) numerous headphones and amps. Decided upon the Grado SR80 and Headbox. Sounded good with my Violin concerto demo disc (I love that CD... Scratched to hell now, time to replace).
Happy.
Hooked it up at home to my Primare's. Listened to the same disc.
Still happy.
Listened to quite a few other discs.
Not happy
I tried the headphones in other equipment that could accept directly headphones. Okay, the quality suffered as they were not audiophile quality - But using the original disc as a reference I could tell the headphones were performing satisfactorily across music genres. (I actually like the slighty abraisive feel of Grado muffs

).
I kept the Grado's. Returned the Headbox. Thanks to my local store, they were great considering I didn't home demo (A SIN!). They were happy to chat why the sound was so, gave good pointers for choices etc. No quibbles returning as I didn't like it. I like that service.
Decided that maybe I should just invest in an AV Amp sooner rather than later to get the headphone connectivity - Its not such a big deal, so I can wait a while longer.
Paul: You were right, a POS
Mrfaize: GS20s. heh heh heh b-e-a-u-t-i-e-s!

Cannot even describe how happy I am with them. They reach deep down and pull the bass along lovely and snappy, and the treble is divine. A singing angel! (Although, this brightness is something I prefer, some people are put off - Must be the metal tweater issue).