Sanyo Eneloop & Powerex (MAHA energy) Imedion are rated at 2000mAh and 2100mAh respectively. They are tested to be able to retain up to 85% charge after 6 months.
Other rechargables from Sanyo and MAHA (eg, those 2700mAh ones) are usually rated higher than their charge-retaining variant. They are more powerful but will lose their charge faster over time.
For me I use powerex 2700mAh for my flashes, many more cycles and more consistent in recycling. Even for my battery pack, I use 2700s also. I use Imedion and Eneloop for my camera body and spare batteries for flash.