What Spinning bike is best for a commercial studio? Anyone using the Ion?

Star trac bikes are pretty durable and looks like the ion 7220 has all you need. We had the star tracs before we went to technogym and our new bikes will also be the newest technogym. I like the keisers as well Being a spin instructor for so many years here is what I like to have in order personally, for results, and for ease of instruction.
1- make sure it has watts/power measurement.
2- adjustable handle bars and seat vert/hor.
3- RPM usually standard and heart rate preferably compatible w several fitness trackers and straps
4- Gear numbers
5- Calorie tracker