This seems like a really hot deal to me, I have been regreting missing the $129 deal Fry's had about a week ago for the old 6 GB unit, so $51 more to get 20 GB, newer and more flexible firmware, plus USB 2.0 sounds really very good.
BUT
My concern is that prices are dropping FAST and we aren't even that close to the blood in the aisles holiday selling season, maybe a bunch of newer and better units are "coming soon". Better user interfaces are a given, maybe more format choices, but that doesn't effect me too much, my big concern is that those newer better units will have nice steps forward in sound quality, battery usage and weight, which could easily result in the dreaded buyers remorse.