When buying rechargeables, remember that the LSD versions are the new break through and is what most of us were looking for, and all of us were looking for, for some applications, but if you have something that you are going to use heavily, and frequently, and will be recharging every month or two anyway, then you may want to use the non-LSD batteris for that, because you can get higher mAh numbers, for instance 2700 mAh AAs instead of 2000s mAh.
People who use their cameras constantly for instance.
I want LSD. My LSD Sanyo AAs are 2000 mAh. My Ds, the most important of the batteries, are LSD Tenergy 8,000 mAh.
Also, when reading about solar panels and recharging batteries, I found that solar will not totally charge a battery as high as 10,000 mAh. They are even more expensive than the 8,000 plus they are not LSD. There is no point in paying more and the solar panel not charging them totally up to the 10,000 mAh and then they don't hold the charge over time very long.
I researched this thoroughly for days before I decided what was best for my situation. I learned more about batteries and solar chargers than I ever wanted to know.