Eh, that's a bit misleading. Everything comes with a price, in the case of the Eneloops it's reduced maximum capacity. If you're recharging on a frequent basis, the bigger capacity batteries might be a better fit. (It really depends on the individual user)

As for holding a charge, count on regular NiMH's loosing about 1% per day, which means you should have something left after a month.

Finally, all batteries are NOT created equal. Very frequently the cheaper brands will advertise a higher capacity than what is actually delivered, there are review sites on the web that test them. Personally, I use and recommend Maha, both their batteries and chargers are excellent, but there are plenty of other quality brands out there as well.

Thanks for the guide and the followup information everyone!

Drew