This will be my first light I have ever spent more than $30 on. I was hoping for a little input regarding which way I should run the unit. I have read many arguments for and against using The rechargeable battery or using the standard CR123A lithium battery. What would you guys recommend? The reason I am asking is that it will depend on if I purchase the "bundle" (includes the rechargeable battery and charger) or just the light and some batteries. Thanks everyone!