I considered getting a power meter and am still considering it (and waiting for garmin). I read the book a few times and couldnt help thinking that it reads like it is written by someone who has found out they can measure power and decided to study how it could be used for training - rather than someone who was desperate to know power output during training because they knew it would be useful. In other words, the technology was developed not through need but through techno progression. While meters are getting better, the software and data are still immature and need more development.

So far i still havent got a power meter mainly because my knee is playing up and if the data told me to ride hard i couldnt.....