To close the loop on this, I did grab a 605 160gb. I've been happy with it as I use it to pack around basically all my music, to pop on movies for trips, and I can sync with my camera to use it to offload my pics to free up my card. I bought the mini adapter, have not worried about the dvr adapter because I don't really need it.
The only real cons I have is the 5000 song limit and the interface could be a little better I suppose, altering the playlist is not the simplest thing and I have just resorted to editing the xml file on the PC. Some things are not as intuitive as I needed but a quick check on archosfans.com usually pointed me in the right direction.
Buying it I knew it was BIG so I can't knock it for it's size. I do wish I had something smaller to use for biking, but for travel and at work I love the capacity. I also love the unit mounts as a drive and I don't need anything proprietary to xfer files.
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