So my girlfriend has been asking me for Christmas ideas so I have been wanting to get either a watch or computer to star tracking my stats. She is a marathon runner and has a Garmin watch that tracks heart rate and distance, avg speed, and all of that good stuff. I have been looking at the Wahoo BOLT bike computer but I would also like something to measure my heart rate and possibly cadence (Wahoo sells a package deal for all of this). My questions is what does everyone use and what do they prefer or if they like a combination of the two (watch and computer)? TIA!