I am a long experienced Tech for Cablevision. The Tivo Series 3 and the Lite HD Tivo are a hit and miss. Tivo announced to Cablevision all the issues their equiptment is having and said they will have it fixed immediately and to have the customer notify Tivo to get it fixed or swapped for a new box. Issues were the Slot 2 failure and/or pixilation and also the aggravating 30 cable cards later and not one working with the Tivo. Sometimes when the customer would call Tivo their techs would not allow them to swap the Tivo box insisting it is all the Cable company's fault. Others would swap it with no problem and the next visit we would be out of their from 20 minutes to an hour depending on firmware upgrade and guided setup. So far I have seen less the 50% of the Tivos work. I would spend a whole day at a persons house rewiring and trying up to 20 cable cards with a no go. Once the sub got a new Tivo the next visit was easy and short. Granted we also have many bad Cable cards in out inventory. I would say almost 1 out of 4 is bad but that is Scientific Atlantas fault. The refurbish their cards and never solve the issue. The pixilation issue with Tivo is ridiculous. When the first batch of Tivos came out we never had these issues. It was more a slow process on the cable companies fault to get their Techs familiar with the Tivo 3. Once we got the hang of it Tivo 3 series they were a bang out to install. 20 to 30 minutes easily no problems except the once in a while bad cable card. Now its flooded with hundreds of defective Tivos. Our whole day is shot because we have to knolly out all the possiblilties of it being our fault. I don't know why Tivo couldn't produce fully working boxes since they started with good working ones. Personally I love the way the Tivo is set up with its decorative menus and options and I think it produces a clean picture. But with all this aggravation and all the money spent I would just deal with the DVR from Cablevision. You spend up to $600 on the Tivo, $15 to $20 on the monthly (CONTRACT) service, $12 a month for both Cable Cards, and then a whopping $50 for an installation charge when we come out. Also if your Tivo is defective we will charge you for the truck roll on trouble calls and installation. The DVR is free with a $15 a month charge, no contract, free replacement, free trouble calls (as long as you didn't mess with the wires!

) and you will probably get free installation or you can install it yourself easily. The Tivo also needs an internet or phone line connection to Download all the updates and get the TV guide info. The DVR needs only the cable line and seeing that Tivo download off a phone line is irritating. I think its to much aggravation to deal with Tivo customer service and Cablevison customer service and go through the finger pointing. You loose the nice fancy Tivo menus and its easy to use interface but the DVR is not that bad. You can even hook up an external HD to the DVR. They said they are working on a new interface for the DVR so soon it will be exactly similar to Tivos and they will also work those annoying bugs out too. Everyones house that i went to with the Tivo problem are pissed they dealt with the all the crap and wished they got a DVR. They would of if Tivo didn't lock them in a contract.
If you want one wait till Tivo gets all their problems strait. The cable companys will always have issues with Cable Cards but they will get it to work for you and they won't charge you for their mistake. If you get one and you see any of those problems with a good installer at your house get ready to swap that Tivo. Try the DVR first and see if you like it. You can always get rid of it and they have promotions for one to three months of free trial use.