Reviving this old thread again... and a question for Mark.
The price of the 3TB drives has now dropped to an acceptable price point (for me that is) of 125 euro/drive.

For that price, I can buy either the WD30EZRSDTL or the WD30EZRX. The only difference I can see is the WD30EZRSDTL uses a 3Gb/s interface and the WD30EZRX a 6Gb/s interface.

Now, logic would dictate that I would choose the WD30EZRX over the WD30EZRSDTL because of the faster interface, especially at the same price. BUT... I'm wondering if this disk is just as good as the other one. And mostly, my current motherboard does not have a 6Gb/s interface (but my next one will, no doubt, and I like being future-proof if the choice is there).

Can I use this 6Gb/s interface drive without a problem on a 3Gb/s motherboard? Is there any danger in using the drive like this? (data loss?) Or should I just buy the 3Gb/s version and be done with it?