Also you may want to consider this:
There is currently a group buy in the works for a custom BLF Special Edition X6 (version 2). The group buy consists of a set of 2 flashlights the X6 and a “mini” version called the X5. The X5 uses a smaller size 14500 rechargeable battery. (the 14500 is basically the same size as an AA) Either of the Nitecore chargers can also charge a 14500.
-
The flashlights are being custom made to BLF members preferred specifications and will have more output than a standard X6 when used with high discharge (unprotected) IMR batteries. You can still use high capacity protected batteries in them for longer runtime, then later when you are more comfortable working with Li-Ion batteries you can try the unprotected high discharge batteries for “turbocharged” output.
-
You must buy the set, they will not be available separately for the group buy. You can choose your set either in the usual black aluminum, or a set with a stainless/copper X6 and an all copper X5 (for double the price).
EDIT: The price of a set in black aluminum is estimated to be around $45/set, so you can think of it as getting a custom X6 for $25 and the X5 mini version for $20, which are really great prices and would replace both of your Maglites. Also there will be some waiting involved to go this route, the flashlights are still in the pre-production prototype/testing stages and will hopefully be available for order by Christmas 
.
-
The flashlights user interface (UI) will be more technical than a standard X6, but will allow for user configuration of preferred of mode selections.
For guaranteed availability and price you must commit to a set in the group buy thread here: BLF Kronos X6/X5 GB - Group Buy now closed.