Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Real Disappointment

I own two other Directv DVR recorders and love them. They are the older model that is not available from Directv.I bought the R15 for its longer record time.It is a real disappointment compared to the older models.The user interface (the interaction of the user, the remote and the screens on the TV) is much more difficult than the older models. Right now I am having a problem with it not recording correctly when I tell it to. It's slow, and difficult to use. Directv cannot offer a solution to it not recording shows.I am buying one of the older units to replace this model I got from Directv.