Best Airplay Device


I am currently using an Airport Express with a glass optical cable to a Sim Audio Moon 100 DAC. Is there a better wireless device than the Airport Express that is compatible with AirPlay? Thanks very much for any input.
hugo1
Apple Extreme or Apple Time Machine which includes the Extreme wireless in conjunction with he Logitech Touch into a Metrum Acoustic DAC.

I began with the Express. Regardless of what cable you use with the Express it is still a bandwidth choke point.
How about this?

http://www.intl.onkyo.com/products/accessories/ri-dock/ds-a5/index.html

Or if your budget extends further

http://us.marantz.com/us/Products/Pages/ProductDetails.aspx?CatId=ReferenceSeries&SubCatId=0&ProductId=NA11S1

(this has a built in DAC as well but also analog outputs)
Thanks very much. Do you know of any reviews of the Onkyo or anyone who has heard it?