I be originally plan on get the 6500 , but could not find one locally . during that search , I run into a store that have one 6600 leave and it be on sale , so I go ahead and get it . the only apparent difference that I have find be the 6600 have Bluray 3d capability , but other than that they seem pretty identical . setup be relatively easy . everything be color-code and Samsung have they own little speaker wire plug , so it be hard to screw up . that make it easy , but more difficult to do any kind of customization of you own with other speaker . the speaker calibration seem to work pretty well , although now and the audio track randomly get out of sync on occasion , require a re-boot to reset thing . so far this have only happen when I have be watch the dvr , so I be not sure if it be specific to that device or input or not . I have my xbox 360 and hd Cable plug into the HDMI input , and it play everything well . it be great playing game in surround sound , too . that add a whole new dimension to the gaming experience . all of it be run to a 50 '' Panasonic plasma tv , which have one of the best picture in the tv business to begin with , so the video quality be awesome . I expect the sound to be marginal at best , come from a bit of a home-theater customization background . I be pleasantly surprise at how good it actually sound , though , particularly when play dvd or Blurays . do not get I wrong here , though . this provide the most basic of surround sound , which still greatly enhance watch movie , but it do not provide the same depth of sound as much more expensive and more powerful system . that say , the subwoofer do get low enough to simulate most sound , and the rest of it sound pretty good . dialogue be the best part , as this be actually sometimes the hardest part of a soundtrack to find a happy medium for comfortable listen without have to keep the remote handy for turn it up and down as the scene change . the Samsung find a balance between action and dialogue where you do not have to constantly adjust thing , which be proof that they have the auto-calibration down pretty well . I have mine wire directly to my home network . I do not even bother with the wireless dongle , as I have yet to use one that work to my expectation . even with a wire connection to a 10gb connection , I experience Netflix issue . the entire internet-based menu and app system be sluggish at best , so I will probably only use the internet for firmware update . I believe this be a Samsung issue , not my internet , for the simple reason that I can watch full hd Netflix movie through my xbox wirelessly with no issue at all . and that be fine with I ... I still play they through the Samsung surround sound , so it be not a loss , although it would be nice to see Samsung come up with a fix to smooth thing out . there be various app and whatnot you can play with online , but the remote be clumsy and poorly design in my opinion . it lack any intuitive way to type , for one thing , which limit what you can do efficiently on the web . you have to create a account at the Samsung app store , and another at they internet@tv or whatever it be call site , and I just have not have the patience to sit through it all . I have enough computer and app already , so I guess I be happy with just be able to play bluray in surround sound for now . : -rrb- for the price , I do not think you can beat what you get with this system . $ 450 and it do almost everything . I do wish it would tell you what resolution it be output to the tv and what kind of sound it be play in -lrb- i.e. dt , Dolby 5.1 , etc -rrb- . as far as I have be able to discover , there be no way to tell if it be truly play the encode surround signal . pro : price , good sound , easy setup , better than normal auto-calibration system for speaker con : confusing remote , unexplained slow-down in internet signal run through system that make use Netflix almost impossible .