Help Please.... Set up question.

I suppose it's probably too late to tell you to take the blue pill and go back to your Bose (yes they are overpriced, but they don't seem to leave their owners with the constant need to upgrade - compared to this place, it's cheap happiness), so instead I bid you a hearty welcome!

There will be many people here who can answer your question about the specific headphones/source/amp you've mentioned.  You will have better luck finding them in the full-size headphones forum: http://www.head-fi.org/forum/list/4

Also, don't take another step before you read this post by boomana:  http://www.head-fi.org/wiki/a-hopefully-helpful-headphone-buying-guide-for-newbies-by-boomana

The only thing I can add to this is to ask whether you have actually heard the headphones you are considering buying, or whether you are making your short list and planning a purchase exclusively from reviews.  There are many people on this forum who certainly love Grado and claim they are the best value in the SR125/MS1 pricerange and lower.  There are also many people, myself included (though I do very much like the HF2), who are not particularly fond of their sound.  In face, I'd probably buy Bose over the two cans you've mentioned.  I'm not trying to say that you shouldn't buy them, but in this hobby you can spend a lot of extra money if you don't try before you buy.  Go to your local hifi shop, go to a head-fi meet (see http://www.head-fi.org/forum/list/24), do whatever it takes to listen to the music you like on the headphones you are considering buying.

Good luck and enjoy the music.