A Three Year original commitment extends the Limited Warranty parts coverage on the product from 90 days to a full three years. A One Year + Two Year Service-Only approach does not extend the warranty beyond the first year. There is some value to the extended warranty. And the $60 cash-over-time difference is diminished when considering Present Value of the future revenue streams. I think the bulk of posts regarding a 30-day grace period for Lifetime registration is clear that such period relates to recently purchased machines only (i.e. those never subscribed to TiVo service) and does not include existing machines on prepaid or monthly service.