My broadband was out for a period this week so had to resort to my VirginMedia dongle. First experience of using it in anger (for work). Not overly impressed - 0.6-0.7 MB download. So I went and bought a 3 Premium (Huawei e367??) dongle yesterday. Tried it this morning.
Much better 6meg download and 2 upload. got it on 5GB per rolling month contract for 15.99. Will easily be a good backup for working when my main broadband is down. Good coverage too.