PTAT records the 4 major networks, and only saves them for 8 days.
If you have a show you must keep up on and watch, then I would suggest that you use the Standard DVR feature to record those series, and you can manage them yourself (Ie, 5 Shows worth, instead of the PTAT of 8 days). The PTAT feature is one of those nice features that you can pop in an out of a show you may have wanted to watch during prime time, and did not have enough tuner's to watch or forgot to record.
If you have a show you must keep up on and watch, then I would suggest that you use the Standard DVR feature to record those series, and you can manage them yourself (Ie, 5 Shows worth, instead of the PTAT of 8 days). The PTAT feature is one of those nice features that you can pop in an out of a show you may have wanted to watch during prime time, and did not have enough tuner's to watch or forgot to record.