1. How many lumens are all the Peak Mt. lights? they don't say
2. What is the difference between the narrow and medium optic? are there beam shots?
3. Would the brass have better or worse heat dissipation than the HA?
4. How good and how low does the QTC go? Is it like other rotary lights or is it like a cheapy version? (This goes for all QTC lights if there is a difference).