The Quest is a coax only switcher (some add an RF Modulator). If that's all you need, that's about as good as it gets.
If you want improved video to your HD TV's you will need to re-wire for HDMI.
What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?
