Originally Posted by Racer Ex

Another question, is the Garmin set up for real time intervals? Does it calculate kJ in real time? Given that the real purpose of a power meter is as a training device, these would be huge factors in my decision. I use both metrics on my SRM extensively. Which I hadn't even thought of till now.

BTW, there's a pretty good extrapolation between kJ and TSS, and you can do a ratio of time/kJ to get a rough IF.