I've had the Vizio 37" LCD for 5 weeks and I'm very satisfied with its overall performance, especially for HD. It's set up in the bedroom and we mainly watch HD programming via an HD-DVR cable box. PQ for SD programs is quite acceptable, but not great, which is a common downside with most HD sets.
For me, the Vizio L37 is primarily an HDTV, then DVDs, then SD, in that order. I consider the sound quality to be very good; it's producing a surround sound effect via the cable/HDMI connection. I assume you will use component for your DVD player, which will be fine. Just note that the S-Video connections are located along the right rear side of the panel, which will cause those A/V cables to be partially visible.
Sorry -- can't help you with the ViewSonic.
For me, the Vizio L37 is primarily an HDTV, then DVDs, then SD, in that order. I consider the sound quality to be very good; it's producing a surround sound effect via the cable/HDMI connection. I assume you will use component for your DVD player, which will be fine. Just note that the S-Video connections are located along the right rear side of the panel, which will cause those A/V cables to be partially visible.
Sorry -- can't help you with the ViewSonic.