As much as I love having less wires and going wireless, I have experimented connecting the Sixaxis by USB and connecting to the internet by ethernet instead of Wi-Fi. I still use my Motorola H700 bluetooth headset.
This may be no surprise to some and some may have no issues with wireless connections, but here is what I have found.
Everything works faster and better connected by wires. The XMB responds faster. The internet works faster. The PS store loads faster. Games respond better and the Sixaxis motion abilities during games works faster and better.
There is no disconnect issues with the controller being connected by USB unless, and this is odd, I hit the main button on my H700 like I am going to receive a call even though I don't use the headset for phone and only for R:FOM. Then I get the disconnect symbol for the controller and it loses connection for about 5 seconds. This is odd because the controller being connected by USB DOES override the wireless connection. I can't help but wonder why the controller would disconnect if it is connected by USB.
The headset itself has less or virtually no loss of connection issues and remained constant and strong. Prior to this when I used the controller wirelessly and connected to the net by Wi-Fi, I had frequent headset connection issues and dropouts.
I know wires are a pain, but I am in a situation where wires are not really an issue and if the system works better and faster, then I will continue to go wired.
All in all the wireless worked well and I would say it worked 80% of the time with minor problems, but if I can get the PS3 to work almost 100% of the time with no issues, then I am going the wired route.