Ok, I won't dwell on the pros, because basically, this device is STUNNING. Beautiful screen and video playback quality is incredible - and that's why you're buying it. It looks good, the finish is nice, and it's not big or chunky. I highly recommend getting one - I even watch it at home it looks so good!
However, I think the important thing for me is to cover the annoying things you will encounter. So here goes:
1. Very limited windows explorer facility on device, i.e. u cannot create folders or subfolders, or even move files around, and you can't see any folder properties (e.g. folder size etc.). You have to do all your creating/editing/rearranging, on your pc, and then copy it onto the archos. It seems silly if you want to rearrange files that are already on the archos. (No big deal though)
2. The screen smudges easily so get a screen protector even before u start using it.
3. Also doesn't come with a case, but I got a nice one from i-nique for about £15. Does the job.
4. Having to buy separate power adaptor? - hmmm..... not good
5. 30GB?? That's less than my mp3 player from 3 years ago. But then again, if I had a pound for every track that has remained completely unlistened to over these 3 years .... Anyway, at least it keeps it "outstandingly" slim. Just be prepared to rotate your video files - does anyone really need more than 10-20 films on there at any one time?
6. Takes a little while to get used to the buttons and navigation, but you can work things out relatively easily - haven't needed any documentation yet. It would have been nice if the buttons lit up too, because it is impossible to see in the dark. Once you are used to them though, then I guess it's not really an issue.
7. The photo viewer initially displays all photos even if they are in subfolders. This can be annoying if there are certain photos you would rather not have displayed for all to see when photo viewer is selected (is there a way to stop this?)
8. Music quality is alright. Not stunning, but it's definitely not bad and u can still enjoy it. If listening to music is a secondary function for you then the video playback will certainly make up for it. If you want buy something primarily for the music, with video playback a secondary function, then you MIGHT want to go with something else - although, different earphones and the EQ settings has a huge impact on the sound - I like the Jazz settings.
9. Nearly all of my music and video files are in supported formats so I can't really complain about video format issues. It's a little annoying that it doesn't support other picture formats like gif or bmp, but I was aware of all of this when I bought it.
A note: when updating firmware, the device must be charging (is it just mine?). So, plug the USB cable in and select "charge only". The archos website doesn't mention this.
All in all...a good buy, you won't be disappointed, though be prepared to spend money on accessories (I spent over £100 - case, battery pack, DVR station, screen protector). A little more thought given to the little things (and the music quality) could have gotten this device all 5 out of 5 ratings. Maybe Archos should read these reviews and bear it in mind next time - I know when I see an average rating of 5 out of 5 for a product, across lots of reviews; it practically makes my mind up for me. If i could have given 4 1/2 stars, i would have done.
NEW: Since writing this, i have on occassion felt a little bit more let down by the music quality. It isn't brilliant. Could have been better - i take back the 4 1/2 stars, stickin with just 4. If music IS of main importance, then there really are better machines out there, although you will miss out on what is still amazing video playback.