The opinions of the outpost I can only agree:'ve bought the time here in a bundle with a AccuPower charger, so you not only refreshing batteries, but also can determine their real capacity sufficiently accurate. Conclusion, the alleged 2700 and 2600 to .... etc. have almost all only 2000mAh, if any (the summit were printed 2700mAh, measured in 1700 ...).
The Eneloops all * least * 2000mAh, mostly in 2100, goes up to 2200. More is probably technically only in lithium-ion. Particularly positive is the very low self-discharge. Give yourselves definitely a charger, the battery can also refresh, so keep the good parts any longer!