The feedback I've heard from Woo Audio with the HE-500 has been mixed on this thread. Looking beyond Woo Audio there is too much choice at the price bracket! Just to think of couple that could be classified as near end game...
Audio-GD Master 9
Darkvoice 337/La Figaro 339 with upgraded tubes
If I was in your position I'd probably look at the Violectric V200. It sounds from going by other users feedback like the best near end game quality amp one could find. As a bonus it plays nice with a wide variety of headphones. Only thing its due for replacement in the near future.
Edited by daerron - 4/13/14 at 11:17pm