There is always a trade-off when utilizing a wifi control system vs. non-wifi (zigbee, z-wave, proprietary, etc). One of the biggest disadvantages is the lag upon connection time that you may notice when you pick up your iphone or other wifi device. This is not URC, this is the nature of wifi and the time it takes to connect and verify credentials on the network.

If you can get past he lag upon connection, you will enjoy the ability to stream large blocks of data much faster and effectively. Items like cover art, and heavy imaging can come across like lightning. You will also notice a very good range output among other things. Again, the lag is the nature of the technology and is the main reason why people buy SONOS controllers vs. just use an iphone or itouch/ipad. The SONOS controller never drops the connection, so when you pick it up and wake it up it's ready to go.