Go to
http://www.usa.denon.com/catalog/pdfs/DVD%20Web%20Chart%20100203.pdf
to see the differences. On avs, other members claim the video is the same but the 2900 has better DACs. One difference w/ the video that i saw was w/ 4:3 zoom. I'm planning on a 42" plasma (EDTV). Does anyone know what this would mean in this case?