Definitely the PowerSync. You'll want him to have that power meter, and he'll want it, too!

Why? First, because it will allow him to target and maximize his trainer time for the most effective workouts. Power really opens up all new realms of involvement with cycling, from data crunching to training targets.

Next, power is the future, especially in the context of trainer workouts, and he'll be ready for those developments-- interactive riding as with Zwift-- with the Powesync's electronically controllable resistance, ANT+ and Bluetooth connectivity.

Lastly, the price for Powersync is less than what it would cost to add powermeter setup to a Fluid2, and offers some features that only come with integrated power units, like that electronically remote controllable resistance. I'm telling you, Zwift is going to completely change the trainer world, so why not put him in position to be at the forefront. Zwift should come out of Beta later this winter.

On the pricepoint of Powersync, it's good. Compare to the current standard-bearer, Wahoo Kickr ay $1100, or to the Lemond Revolution with Wattbox, and you should feel comfortable that you're getting a top quality unit at segment leading pricing.