The Sky Burner Pro Dancer SUL will fly in 0mph. However, you need the skills to make that happen. If you have trouble keeping the Zephyr flying in 2mph, then the Pro Dancer won't be much help at 0mph, but you will be able to fly it at 2mph easily. It is, like the 4d, more fragile than other kites. There is no "perfect" kite, even though we are all always looking for it. Each is a compromise of weight, balance, speed, agility and other factors. The way to make things work as you want them to is to perfect your skills to the point where you and the wind move the kite together. There are three levels of flying a kite:
1. The kite flies you.
2. You fly the kite.
3. Both of you fly as one.
You'll know when you have achieved that 3rd level when it happens. For all of us that level is achieved intermittently; it is more of a mindset that incorporates a combination of many factors described as Zen.
Have fun, smile a lot, and don't forget to breathe. You'll get there. We all started from the same point.