First is a 56" Samsumg DLP
Second is a 55" Sony 3LCD Rear Projection
Samsung has AMAZING clarity and brightness as does the Sony but i think the Samsung has this catergory won. I can get both with matching stand and 2 year warranty with free in home delivery/set-up for $2000 cash and carry.
The samsung is full 1080p while the sony is 720p. Both have dual HDMI inputs and all the same hook-ups, but the Samsung has a gaming mode for the serious gamer, which me combined with my 2 kids=serious gaming. honestly, i could go either way on this one, mainly because of Sony's reputation and my experience with their products. However, i'm in love with the Samsung.