And one further thing.....
I'm very surprised at the volatility of actual speeds achieved in practice with Infinity 2. The IP profile is 38/9, and when I tested 10 minutes ago using the BT speedtester (the production version not the beta) I got 32/9. However I have often seen it as low as 12/7, but then another test an hour or so later may produce results much closer to the IP profile.
I don't know if this typical, a line fault or there are massive network contention issues in the background, but the speed variations can be quite noticeable as I work (I work from home).
However, overall I'm a satisfied Infinity cutstomer so far. The speed is generally acceptable for my needs (much improved on the flaky ADSL 4mb) and the connection is stable (touch wood!)