I bought a 9P in feb and liked the bright light but wasn't too excited about the 1 hour runtime. Ever since I've put the KL3 head on it, the P90 bulb has seen almost no action. The KL3 head is definitely an outside light due to the tremendous throw. Indoors, the KL3 head is on the narrow side, but the narrow beam opens up when you are not confined by 4 walls. The 7 hour runtime is just tremendous since the KL3 head has an almost flat regulation curve of output, which means that your light is just about as bright at the end of the 7 hours as it is at the beginning of it. I also have a 6P body mated to a KL3 head, and I added a clickie to the 9P to make it more interesting. The sole downside to the whole setup is that the 9P is a relatively big light and the KL3 head makes it even bigger. However, it was never meant to be pockable, unless you have really big pockets.