Dont have either, but any Iriver product I've ever purchased has been streets ahead of Creative for quality.
Read Tom's hardware guide, they are generally reliable reviews
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Personally, I would, and have, purchased an Archos AV420 for same spec but also with video playback. You pay extra for the privilege. Eur409 at www.komplett.ie versus the H320 at Eur295 .
The iriver can also be used as a hard drive on just about any machine that supports usb while the Creatives require their own software to be installed for the device to be used as a portable hard drive. Or at least that used to be the case with the creative devices.
I have an iriver and I would recommend them highly. I've seen the 320 in action and it seemed very nice indeed. I liked the power over usb aspect of it too.
Thanks for the advice. Yes, I have gone and bought the iriver H340. The H320 is now unavailable anywhere. The 340 is the exact same but with more memory. It's for my son and a bit of a secret. I know very little about mp3's so I was delighted to get the help on buying. Now i just need a part-time job to pay for the thing.For anyone interested, the 340 is available in Peats, Parnell St., and is reduced by E100 at the moment, selling at E399.
Thanks again.