Turnigy Low Self-Discharge (LSD) NiMH AA's

My old, very old AA's are beginning to perform very badly. (But they're about 4 years old now, so they had a long life :)) I remembered this topic and I always wanted to buy a few of those Turnigy AA's. But how do they perform on the long term? Who has been using these for a longer time? And should I buy them or not? (I'm planning to buy about 30-40AA's because I need those things so much lol)

Thanks

Patrick