The default DVR with my cable service (cox) comes wih the ability to search for shows to record by title/keyword, record entire series (on all channels or only a specific channel) record first runs only, repeats, ect. You can set how many episodes to keep on the DVR at one time, ect.

The main problem I have is that there just isn't enough space for HD shows.

Besides the space issue, I am not sure if I would really gain much by switching to a Tivo since it appears that I have much of the "Tivo-Like" recording options with my default DVR.

-David