The x21 produces more "lums" of light than the lightforce 240 blitz all that from a torch running 4 d cell batteries. I use and swear by my p5 its the baby of the family and runs of 4 AAA i can spot cain toads at 50m easy im looking at the p7 the next 1 up for the family car. As to price i payed $100 for the little 1 and expect to pay $150 ish for the p7 expensive but bloody worth it
Butch