I would still crave the additional warmth of the HPA-2, but I must recognize the Dragonfly + Vali as the best performance for dollar recommendation. I have not heard the Vali yet for myself, but the feedback is so strong and wide reaching that you can read through the Vali thread and find enough meaningful comments that you will walk away with a really good idea if that is a good option for you.
I say best value because I think the design and portability of the Dragonfly is worth the small premium over something like a Modi if you think a portable / mobile solution is a plus for your situation. It is for me, and I have become a big fan of the Dragonfly the more I use it with a variety of headphones as well.
Edited by Greggo - 2/14/14 at 11:28pm