Ive been using the ibike since the Gen 1 came out. It has gotten much better. The Gen 2 is a huge improvement. I vibration issues are no more, and once I figured out how to calibrate and use it properly its been a great unit. The best part is when they come out with a new unit you can upgrade for a fraction of the cost. So my Gen 1 I paid $300, and the Gen 2 upgrade was $199. So for $500 I got the Gen 2. I have HR and wireless. With extra mounts I just swap it from bike to bike. Is it the best unit? Maybe not. Does it work?Absolutely. Ive considered a powertap from time to time. But like Waterrockets and his bike, Ive just seen no real reason to spend more money.