I purchased this 8GB Zen X-Fi after doing some extensive internet research. I must say, I absolutely love it! My son has an iPod Nano 8GB (3gen) and when he saw the Zen X-Fi he asked if we could trade players.
The player is exceptionally good-looking and very well put together! I've read reviews where people complain about the fact the player's back plate is made of plastic, so what?!? This makes it very light, and yet has a solid feeling to it. You have to get yourself one, it's downright gorgeous!
I found the player's user interface to be very user-friendly, the menus are very easy to access and understand. Some reviewers have said the player's buttons on the front panel are too small; this has not been an issue to me, I think they're perfect for the size of the player.
I have not yet used the software included with the player, I connected it last night to my laptop to charge and then downloaded some music into the player using Windows Explorer (it was a breeze, just drag & drop!). I was amazed at the download speed: I put in 4 CDs (about 12 songs each) and each took about 10 seconds to download! (No iTunes for me! But I'll have to keep it for my son's iPod)
The sound quality is excellent, with the included in-ear headphones (which are absolutely great!) and with the external speaker. I listened to some audiobook samples that came pre-loaded with the player and can't say enough about how great the sound is! Video playback is awesome, very crisp and clear. Same thing about pictures, they look fantastic!
I like the fact that I can increase the storage capacity with the SD Memory Card slot, this is something the iPods are seriously lacking. The FM Radio Tuner and the Voice Recorder is a nice feature to have too. The player also has an Organizer, which is a feature that I have yet to explore.
Overall, at this price range, and with all the features and niceties, it really doesn't get any better than the Zen X-Fi.