Headphones integrateds with XLR preouts?

I would recommend against an all-in-one solution that includes a DAC. There is so much progress in the DAC field right now, especially in sub $1000 DACs. Some DACs are even being designed with boards that can be swapped out when improved chips or designs are available (Wyred4Sound and the forthcoming Schiit DACs both offer this in their designs).

For a great integrated that can act as a headphone amp and a balanced pre, I'd check out the Little Dot Mk VI (only balanced inputs and outputs) or VI+ (balanced and RCA inputs and outputs). I use it with my HE-5LEs and love the combo.

The Benchmark is often used as just a headphone amp so I think that is one you could look at seriously.

Rex, I currently have the MA Audio Q40 headphone set. I like it but may spring for an upgrade depending on how they sound after I get new amplification.
Roscoeiii, thanks and I'll be mindful of the continuing progress in Dacs.
I might just pick up the Benchmark as Swampwalker suggests until the next generation of separates/dac hits.
Thank you guys for your input, it helps a lot.

Bryston is coming out with a new headphone amp which looks good. Check their website or contact.

I would suggest that you look at the Antelope Audio Zodiac DAC. There are three models; the Gold is the top unit w/ remote. It is an excellent DAC with dual headphone outputs, balanced XLR output and volume attenuator, so it can also act as your preamp. Great unit, was recently written up in this month's Stereophile.