advice on these two external portable HD's

[antonioconte]

Wonder if anyone out there could advise me on external hard drives, portable, without power:

http://www.ebuyer.com/product/148551

or

http://www.ebuyer.com/product/149256

these seem like the best out there at the moment - these seems to be a fair amount of different in price.

I'm no expert, but can anyone point out why the Iomega is more expensive? surely not just because of it being a bit smaller?

any advice, much appreciated.

[Hughvane]

Looking at our NZ price watch website, I note that I can buy a Hitachi 2.5" 500 Gb drive for £107, plus an enclosure for about £4, so the £100 price looks favorable. I've read some pretty scathing reviews of Iomega external drives, so take what note you will of that. See this re the Buffalo drive:
http://shopping.trustedreviews.com/UK/product/79375105/Buffalo_Technology_Buffalo_MiniStation_TurboUSB_HDPF500U2_ext_Hard_drive/
I'd like to know what *brand* of hard drive is inside.