AA, keep in mind you'll need an amp to drive those suckers into optimum performance. From the AVA you'll be ok, but for comp or portable use, an amp would also be needed. Really, if you're thinking about it and have the budgeted funds, they are really a great set. I suppose you've read Ajani's legendary thread by now, if not, you'll be inspired by the end of it.

I am a "headphone" guy, it's what brought me to hi-fi really. Still love to drift away with a solid set of cans. I can assure you, your wife will think it's the best purchase you've made yet.

Then I bought the Krell S-300i and when it arrived I realized no headphone jack.
Why do you suppose no headphone jack JM? I suppose Krell aren't alone in that endeavour...my Copland didn't either. I think they figure if a guy wants phones, he'll buy an amp.