Hi, i am going to buy an SB700 soon but i am not sure which batteries to get. Been looking around and found Eneloop to be quite suitable. However, there are 2 types of Eneloop batteries, 2000mAh w/ 1500 recharge cycles and 2500mAh w/ 500 recharge cycles. So would i be better off with higher power capacity or higher lifespan of the batteries?