As one of its daily deals, Best Buy offers the TiVo Roamio HD DVR & Media Streamer, model no. TCD846510, for $39.99 with free shipping. That's the lowest total price we could find by $30. Equipped with four tuners, this device records up to 75 hours of HD content (500 hours SD), including four shows at once while watching a previously recorded show, and works with HD antenna. It features built-in wireless networking and is compatible with Netflix, Amazon Prime, Hulu Plus, YouTube, and more. Deal ends today.

Note that this requires a subscription to the TiVo service, which starts at $14.99/month.