While I tend to lean towards some Sonance products...
http://www.sonance.com/products/electronics/detail/240
I think that the product you have listed seems like it may do a bit better of a job overall.
Now, I would keep (very much!) in mind that there is no chance in the world you are getting 200 watts out of your receiver, and you are putting a fair bit of wear and tear on the receiver if you are using the internal amplifier.
A/V receivers typically measure their power based upon a single, or two channels driven, not all channels, so if you use your surround and your distributed audio at the same time, you will have a fair bit less power for the distributed audio, and it will be hard on the receiver.
Typically, I would recommend that instead of taxing the receiver, that you consider going with an outboard amplifier for your house audio so you aren't putting added wear and tear on the receiver. Unless you have really high end speakers in your home, something as simple as an Audiosource amplifier can do a bang-up job of amplification duties and will not be sharing (and stealing) power from your main surround system.
http://shop.ebay.com/?_from=R40&_trksid=m38.l1313&_nkw=audiosource+amplifier&_sacat=See-All-Categories