"Great Features."4.5 starson by Jhon70
Pros: 90 minute live buffer.100 hour recording.dual tuners.Hard drive space remaining meter.
Cons: DVR needed reformatting.
Summary: This is my first DVR.My first use found the guide to be slow but a reformatting solved that problem.This DVR has performed very well and I like all the features that are in this DVR.So far I am satisfied with this DVR and my Directv service.My DVR is the R15-500.