In the sprint that is Friday's iTunes rankings, many new albums have got off to a fast start, but keeping up the pace for a full week, and translating simple and short-lived download superiority into official chart positions - where seven days of physical sales and streaming are added to the mix - is more difficult.

We should therefore be wary of forecasting too much in the way of success for veteran British electronic music veterans Depeche Mode's 14th studio ...