Oh, I understand the Archos doesn't have my demand for removable battery, but if its battery life lives up to its official websites specs, then I can look past it.
I have had many mp3 players, from Creative's ancient Zen Extra to the Zen Micro and then finally with my most recent Zen Vision M. I have only had 1 I-Pod, the I-Pod U2 special edition. No, I don't break all these or lose them, I simply sell them back and upgrade or give 'em away and upgrade.
I am in the market for a predominately video monster and it must have a removable battery. Which was the only drawback to the Vision M, which is IMO the best portable (easily pocket-able) player ever. I dropped it and the screen internally cracked from the middle, killing all sight from the right side, yet played songs beautifully and video's flawlessly, but clearly impossible to view. Then the battery completely died on me, and why replace a nearly destroyed machine.
I'm kind of torn between the "godly" Archos 605 and Creative's Zen Vision W. I love Creative and surely pledge allegiance to them, but the Archos Wifi is just too amazing to pass up. Creative has a better screen, IMO, their screen is a lot more glossy, though Archos shows off its better screen resolution, 640X480 compared to Creative's 480X272. Screen resolution means nothing to me because I loved the Vision M's movie display, I must of watched over 1,000 hours of video on that player, actually more like 10,000.
After thinking long and hard, and looking at Archos boasting a 17 hour audio playback, 5.5 hour video(especially that!!) http://www.archos.com/products/gen_5/archos_605wifi/tech_specs.html?country=global&lang=en, I was hooked. But!! I've been reading from other reviews and even on CNET that Archos has an average battery life, and is less than that of the greatest battery life players, Zen visions.
So please someone with a Archos 605, rate it as objectively as possible, something I suck at, and tell me about the battery life. Thank You.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic