The switch here does exactly what I wanted it to do with a few very slight ommissions that I can fix RedGreen style.
It's very small! It takes up roughly 2"x2", so it can be placed anywhere and fit comfortably.
The automatic switching is good. I turn on my PS3 and my dual-screen PC setup automatically switches to one screen, while the big HD monitor switches to my PS3.
Manual switching can be done by pressing a button on the device. It's big and clicky, not flimsy and I'd assume it wouldn't break after periodic use. It's a sturdy, tiny device.
The blue light showing the device is in use is useless and very bright. I hide it behind my monitor and it lights up the wall behind it. Though that isn't the end of the world, it's just a slip of duct-tape away from being ignored.
The automatic switching is SLOW. I'm not sure if it's my monitor, my PS3, or this device, but I have to wait 5-10 seconds for switches to occur.
The box doesn't come with a cable attached for the output. This is bad in that I have to buy an extra HDMI cable in order to use the device, but good in the sense that you can attach longer-reaching cables to both the input and output.
Overall it's a solid device that I enjoy using. Its shortcomings are small and what works, works well. I'd buy this again if I had to choose between HDMI switches.