Sonicblue took some risks with last year's ReplayTV 4000-series digital video recorders (DVRs). The company included controversial file-sharing features, sold the models exclusively through its Web site, and provided only a broadband connection, which some argue was a mistake. With that faux pas in mind, Sonicblue has released the 4500 series. The new models, which come in versions ranging from 40GB to 320GB, are virtually identical to the 4000-series units, except that they add an analog modem and a TiVo-like pricing structure. While these DVRs may not be major steps forward, they are positive ones.
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