"Archos' 04 series includes a model for everyone. The midrange 504 may not be the thinnest gadget around (it's got a 1.8-inch drive inside), but it sure can store a lot of data. Available in 40GB ($350), 80GB ($400), and an amazing 160GB ($600) capacity, the 504 fills in the storage void left by the 404, 404 Camcorder, 604, and 604 Wi-Fi, which all max out at 30GB. Just like all the members of the 04 family, the 504 doesn't record line-in A/V out of the box, and it requires one of two recording kits. At 5.1 by 3.1 by 0.9 inches and 11.11 ounces, you're sacrificing the sleekness found in the 0.5-inch thick and 9.3-ounce 604 series. Otherwise, the physical design and GUI are the same as the 604. You still get a removable battery that lasts a rated 17 hours for audio and 4 hours for video, a built-in kickstand and speaker, and a dazzling 4.3-inch display."Hmm, I don't know if I want to invest in such an expensive PVP only because it was the first to hit that big 160GB mark. Plus, it has now become a huge heavy player as compared to the sleek 604 series.