Well, you never really find out how good a company is until something goes wrong. I've had a problem recently with 2 sticks of 256MB DDR RAM dying on me. I looked on the Crucial website and see that they are covered under their lifetime warranty. I've sent a few emails with various details and they give me an RMA number and I send off both sticks in one of their original boxes. I get an email confirming they have received the package and are sending out my replacement RAM. This morning I get the box and there is only one stick there. Not the two I should have received. In every email I sent I have mentioned that there are two sticks. I sent them another email this morning and they claim to have checked with the RMA department and say that they only received one stick. I 've sent them yet another email telling them the RMA department are wrong. If they don't send me another stick then I'll not use them again. I'll keep you posted here as to the outcome.