I have one and it's feckin ACE!
One word of warning though, the single board version connects to the balance lead on your LiPo battery so a) you'll need to route it out to the battery and b) if you run it on all the time it'll rape your battery. The Dual board version connects to your motor terminals so it only lights when the motor gets power BUT you can't run it with the advanced breed of mosfets so it won't be good if you run a Gate Titan for instance.
Compared to the Madbull 3 in 1 thing it's both a better hop unit AND a better tracer.