Nikonian72 wrote:
As a field macro-photographer, I am more interested in quick recharge time of my speedlight, than number of flashes per charge. I will probably buy eight (8) batteries so I will carry a fully charged second set.
When I need rapid recycling, I reach for my Quantum Battery Pack. I have an old one (1984) that they keep rebuilding for me. It's heavy (sealed lead-acid gel cells), but clips to my belt, powers two flashes, and recycles them in 2-3 seconds (full manual).