You'll get replies for Sanyo Eneloop, Sanyo 2700, PowerEX Imedion and PowerEX 2700. Lemme make decision for you and just settle for either of these 2, look no further.
Either one costs about $22-ish for 4 and these are amongst the best you can find in the market. Search around this forum if in doubt as it's one of the most commonly asked and frequently labelled as 'oh-no-not-again' thread... LOL. I use both PowerEX 2700 and Sanyo 2700.