all dvd players

There are only two real negatives that I've discovered. But both are really annoying.
First, the output from the unit for both VHS and DVD is only via composite LINE OUT. This means you need to switch your TV's input each time you change from watching a tape or DVD to watching tv. Older models had dual outputs where you could hook up a coax line to the tv as well as composites to the Video input and both would be driven, so there would be no need to switch unless you really wanted the slightly higher video quality from the composite line.
Second, there's no indicator light when you've programmed the VCR to tape on a timer. What's up with that?
Otherwise great value for the cost; and quite an attractive package. Tech support from Samsung was very very good when I called for a quick answer to a complex question.

I bought the 4600 unit to replace an old VCR in our bedroom, and it hooks up fine to my old TV using the RF connection -- there's even an RF cable included in the box. I was worried my older TV wouldn't be able to support a dual DVD/VCR player, but the 4600 works fine with the old set. So far I've been very happy with the 4600, but I just use it for basic stuff (watching DVDs and taping shows), so I'm not the most demanding user.

I really like this unit and it hooked up great with my home theater system. The picture is awesome and the price was very reasonable. Very nice looking unit and easy to use. I would recommend this unit to friends or family.