eneloop rechargeable batteries purchase from costco. Use them in the 360 and the Wii as well as anything else that needs AA or AAA batteries. Starter kit with bunch of batteries and charger cost about $20.

2700 mAh Rechargeable batteries.

I use Energizer rechargeable batteries.

Rechargeable Energizer batteries. I got 6-8 packs of these for free. I had to buy the charger separately. I have 4 batteries in my 2 wiimotes, 4 batteries in my balance board, and 4 fully charged batteries on stand-by. Oh, and 2 in my camera. It takes a while for them to charge (~4-6 hours) but they usually last me ~30+ hours.

Duracelll rechargables.

One powered by regular AAs, used for non-IR play, and one powered by regular rechargables for IR games, not sure which brand.

energizer rechargeable batteries + charger

I used to use those rechargable batteries which fully charges in 15 minutes, but around the 7th recharge it started running out of juice in 10 minutes. After a few more tries it could only hold it's charge for around a minute. After that I just started using standard disposable ones. Energizers.

And I know how you feel.
I bought my last stack of batteries for half the price+ a buy one take one deal.
I ran out now though.

Joytech Powerstation. Been using it for 2 years.

Well sounds like you had bad luck or something with those rechargeables.  I use the energizer rechargeables and 15 minute energizer charger.  Mine last about 6-10 hours playtime.  15 minute charges make the rechargeable batteries lifetime shorter but not that short.  I have charged the current ones about 15-20 times now and still has at least 6 hours playtime probably 10 is more accurate.  Which brand were you using?