Why? Because I'm bored with my heart rate thing monitor. Actually the Oximeter with large screen output and the ambulatory Blood Pressure devices are also tempting me, and are much cheaper. I also like the fact that the FDA requires me to have a note from a doctor(which I don't).
What I don't like is sending $1000 to China and getting something I have no idea how to use or evaluate. But I assume if they are user friendly enough ...
I am also curious about what my ECG looks like under various conditions.
2000 Montague CX, I do not recommend it, but still ride it.
Strida 3, I recommend it for rides < 10mi wo steep hills.
2006 Rowbike 720 Sport, I recommend it as an exercise bike.
1996 Birdy, Recommend.
Wieleder CARiBIKE (folding), decent frame.