Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unreliable. One unit died after 1.5yrs, another after 9 months.

Multiple units have proven unreliable. We ordered this product and transferred an old lifetime service (for $150 tranfer fee) to this machine. The hard drive died in about a year and a half. Tivo replaced with a refurb. model (for ~$100 fee) and transferred lifetime service. New unit lasted about 8 months and Tivo now (as of 5/09) charges a $200 "transfer fee" for lifetime service that they will not waive (plus $49 +s/h for the replacement unit), even though the reason for the transfer is a substandard product. Have been very happy and long-term Tivo customer (have 3 other non-Series 3 units in the house) until now, but are switching the Tivo HD DVR to a DVR provided by our cable provider. Tivo sells an unreliable product that breaks down in <2 years and has the audacity to charge the customer additional fees to obtain the same service on the same unreliable product. Disappointing.