I can highly recommend
EXiM screen protectors.
They use a dry, non-adhesive film that you can actually lift & reapply several times (as you may well need to do if you screw up the first application or pick up any dust).
You also get a pack of 2 when you order.
I ordered some for my laptop, and they sent a pair slightly larger than the size I ordered. I queried it and they graciously sent replacements out immediately, without wanting the first pack returned.
So I ended up with 4 in total. And they actually cut down very well (so long as you use a very sharp knife), so I've been using the wrong sized sheets as screen protectors for all sorts of devices.
I took some photos when I did the Pandora, I can post those if you want.
I'm sure you're better off with one factory-cut to your screen size, as a hand-cut one may not seal perfectly along the edges (though you don't notice during operation).
They have them for the
Archos 605 Wifi, so I guess that would be the one to pick if Prometheus is right.
One thing to be aware of, is the ones I have make the screen
really shiny.
Again, most of the time you won't notice, but on a black screen you might suddenly find yourself looking at your reflection.
The "Ultra Protect" version is apparently "high glare reduction", so maybe that's the best choice.