Hi Cem,
The pd70X is the same device, different label, produced for the far east market, all units made in china, iirc. I bought mine after a lot of discussion on the fm site, from the usa. It is always out of stock, but the deal was you got extra batteries and a car charger. The pd70x advertised a spare cover for a few dollars, but not in the usa, may be different now. I wasn't bothered, if the cover broke, I could make another.
On the fm site, there was a fair bit about emails not being answered, but I understood the size of the distrubutorship, and had dealt with chinese companies before. I google earthed the locations - I knew where the guy lived!!! Google couldn't get enough resolution for identifying the Chinese outlet/factory.
For what it does, its a very reasonable price. At the time, getting them to fit the 100gB drive cost less than me buying a drive, and fitting it myself.
Beware of the velcro strap - I mentioned this before, in layback cafe. Overal, I think you will be well pleased.
iirc, there was a suspicion raised that the distributor, or an associate, read this forum, I don't know, but If you want to mention my name you can, but it is unlikely that any benefit will come my way. You could try yourself, for a quantity discount ;-)
Its just a good product, imho, far better than the iriver and other things I'd tried before
Best wishes,
Ray > edit Its Singapore, not China, oops - see here
http://www.hyperdrive.com/shop/information.php?info_id=15