DAC Advice needed.

Hey Guys, at the suggestion of several A'Goners I am considering adding a DAC and using my Yamaha DVD S1800 universal player as a transport. I don't want to spend a fortune and sound quality is important more so than video. The Yammie has 4 Burr-Brown chip sets I believe, will I benefit from an external DAC? If so, what would you folks recommend?
Thanks!
Beernut