I personally use Mega batteries.. but it is as much about the (mildly) lower internal resistance as it is about the battery life.
As I have said in other threads... I don't know why people obsess about the battery life. Carry a PCC... swap out your battery when it goes dead. Takes 20 seconds tops. Do that 3 or 4 times a day. Big deal. We used to spend a lot more time than that looking for our lighter and sparking up analogs.... 30+ times a day!
P.S. I don't wait for my batteries to die. I find that to be inconvenient and it always happens at the wrong time. When I refill a cartridge, I replace the battery. Period. There is absolutely nothing wrong with "short cycling" a Li Ion battery.