The only reason I can think of for buying the hub is if you don’t think you’ll ever need more than 1tb, you don’t need wi-fi, and you don’t like the look of two boxes under your TV.
The nice thing about the Hub is that it gives you extra space without using any extra space on your router. I know the OP only uses USB drives, but thats a rare case- most people are using Network drives. Rather than having 2 ports on my ethernet used up, I use a single port and get my WD TV, and a hard drive on the same port. You can add wireless of course, but since N wireless is still much slower than a wired connection, going with a wired solution is always better (at least for the forseeable future- in 5-10 years this may no longer be the case)
It has a gigabit NIC not a 10/100 - only the old Live / Live + had 10/100’s. I suppose for those older devices you could (in theory) get faster wireless speeds, but any kind of interference would cut that substantially. In generally your wireless connection speed would need to be about 5 times (minimum) an equivelent wired speed in order to consider them equal imho.
yet another site basically said it was technically a gig but only had the speed of 100. You will read confliting things all over the web . Some of the reports I have read said it was slow , but still faster than what I got out of the plus.
I have my new WD TV Streamer hooked up to a Linksys E3000 Gigabit router, and the WD is connecting at 100Mb/s with a 2 foot high quality cable. My two high end desktops are connected at 1000Mb/s. Perhaps the HW is there to support GigE, but right now, it does not support it. It would be great to have GigE for file streaming & copying on the network.