I needed more HDMI ports, so instead of buying a new TV I thought I'd give this a go, looking at the other reviews on another item that looked exactly the same but was more expensive, I went for this one. I was not disappointed. Turn the cable on and the light pops up on the right slot, turn the PS3 on, it switches to it, turn off PS3 and we're back to cable. There is a selector switch, but I haven't needed to use it as yet.
As for the picture quality, I really have not noticed any difference at all than if it was plugged directly into the TV. Highly recommend this solution for more HDMI connectors.