I have the Energizer which offer higher mAh. I also have Eneloops and other low discharge rate rechargeable (some were rebranded Eneloops). For my applications, the Eneloops works better for me.
I am not a professional photographer that I need to use my flashes everyday and I do not need to shoot with flashes all day (like weddings). I just need to have some spares around so that I do not need to recharge them every time I need to use my flash(es). I only recharge them when needed. Of course, if I know I am going to use my flashes for a shoot that may last for awhile, I will make sure all of them are charged. (i.e. One time I need to take photos of the datacenter for the company that I work for).
So in general, I have few sets of batteries in the bag that were fully charged at one point. Since the discharge rate is low, so even if the batteries sit for a year, I still have about 75% juice in them.
So for causal shooter, I think low discharge rate rechargeable battery works better. However for those who need more stored power per cell, go with one with higher mAh and recharge them before the shoot (or get a external battery pack)