Well, AA batteries just seem to be on offer after offer at the moment and for a mainstream brand, I can't see this one being beaten!
Even cheaper than my deal on Kodak Max AA's at Directfoto or MX2. This said, I have not seen any review material on Sony brand and have not tried them for myself (too loaded up with Kodaks!)
Aghhh - I have just noticed - these are NOT Alkaline. Apologies for the unfair comparison with the Kodak's which ARE alkaline. Still a steal at the price and are fine for anything other than fast-drain loads