I'm still using a standard bike. I use a bluetooth monitoring strap and my smartphone as well as a Trek bike computer and chest strap. I use the bike computer for realtime feedback and the smartphone logs the entire ride. Normally my heart rate sustains 140+ bpm for long stretches on flat ground, and other days, I'm up over 150 bpm in those situations. And then, there are days I can only sustain low 130's and feel weak. Anyway, I'm hoping to maintain a decent heart rate when riding an e-bike as well, but with some relief on those big hills!