so what do you all have for headphone amps?

all I have it the Total AirHead from headroom, I've used it for the ipod and it did its job.

What I'd like to find is a (reasonable) HOME headphone amp. headroom makes some home amps but are out of the $$$ range I'm willing to shell out.

any ideas? 500$ absolute top I will pay.

I see JVC has put out an intrigeing um .. gaget that give's you 5.1 through your cans. that sounds like it could be cool, for gaming and those times you wanna watch a concert DVD and not distrub others with volume. here's a bit about it http://www.soundandvisionmag.com/article.asp?section_id=3&article_id=1445

Peace