Good HD DVR boxes come from many companies. Among the best would likely be those via Belkin, as they have great tech service and are committed to giving their members what they deserve: a great working product. Dish Network is currently carrying these models.
Call Corporate at 1800 531 5000 and ask to upgrade your box. its 200 for an HD DVR, 100 for both the HD and DVR seperate, and 70 for the Standard Box.
There are several companies that provide direct TV, with HD and DVR. DirectTVPlus HD DVR offers a service where you can record, watch, and delete shows in any room, with just one HD DVR.
Yes, just use a HD DVR with an internal tuner.
Some USB DVR products include the 4 Channel USB Super DVR and the AverTV HD USB DVR. You can purchase these items online from retailers such as Amazon.
The Comcast HD DVR to some is not reliable, many have switched services or started using Tivo, which has been around for a lot longer and is the best.
YeS
Yes.
If the operating system is compatible you will be able to connect the Touchsmart to a HD DVR unit.
A high definition DVR upconverts non-HD content to HD. Also, it can store HD videos on it's large capacity internal hard drive. You should buy one of these.
I believe the relative sizes of HD boxes or regular cable boxes may depend on the provider through which you choose to get HD or regular cable. You should check with the provider you are considering to determine if their HD boxes are bigger or smaller than their regular cable boxes.
You can buy an HD DVR receiver straight from your cable provider. You can also find them at electronics stores. They are also available online at websites like amazon.com.
In order to see the different brands of HD Dvrs, the best place to look is where it will list all of them out. DirectTV seems to have the best HD Dvrs, but there is also a brand called Channel Masters that could be considered. http://www.nextag.com/direct-tv-hd-dvr/stores-html