Because you are looking to switch HD, make sure that the switcher has sufficient bandwidth. The general rule is that the switcher should have double the bandwith of the sources being switched. For HD, you probably should not use a switcher with less than 75-100 MHz bandwidth.
Most...
You may want to check out a recent thread on the AVS forum re the DV-09 with the comments from Stacy Spears of Secrets of Home Theater and High Fidelity (Link Removed). If you haven't checked it out already, you should also review the DVD Player shoot-out on that website.