One thing though that is not mentioned as the tests were on Windows and that is installation on a Mac. Here there is a huge difference.
The vodafone stick was really not fun to install at all under Snow Leopard, I did 3 laptops ( Two macbook pros, aluminium & 2008, latest white macbook ), it sat forever with no indication of what was going on, the dedicated application never got created. I ended up downloading the latest app from UK Vodafone, but basically it was not a fun experience & the online support sites are not very clear.
The telecom stick just worked, really slick install & nice app for monitoring usage.