I've had my CAAD10 for a year (my first road bike) and i'm going to give the Time-Crunched Cyclist training guide a go. (if you're unfamiliar its largely interval based with rather specific tempos for different rides) I'm tempted to get a power meter but I need some help justifying it. First, I really like my Dura Ace 7850 C24 wheels so I don't care for the idea of a power tap / wheel based solution. that pushes me into SRM territory but i suspect that the BB30 might make it more difficult to find a used solution.

at this point i'm negotiating with myself - perhaps if i stick with the training for a month or two i'll start hunting for an srm. or maybe the garmin pedals will be a viable solution.

when should my training include a power meter?