It is all very trying and a big argument in favor of buying all one manufacturer's kit (the disc player instantly integrated remote-wise with the telly).
The best picture seems to be with Blu-Ray discs, which look staggeringly good, followed by Netflix and other HD netty content, then HD cable and other signals a distant last place. The picture from all the non-disc sources seems (to me) to have the actors standing like cutouts in front of the backdrop. This is probably a matter of dialing down some factory preset. All the preset "modes" I found were eye-hurtingly bad; too bright (refelcting surfaces flared like Novae), too red, cartoonish sharpness etc. Once I killed the red by about 50%, made the sharpness a tad higher and knocked the shine off it all looked very nice indeed.
Everyone else in the extended family (who are all HD ents veterans) will probably feel the picture isn't colorful enough, but as I said to Mrs Stevie, I can't watch a face that has livid blotches all over it so I'd be grateful if she'd move out of my eye-line so I could see the screen to adjust it.
I was also mizled over the wireless bit of the soundbar, which was only between the sub-woofer and the bar, not to each of the satellite speakers as I had been led to believe.
I imagine watching me trying to buy all this stuff was very like watching the sketch from Not the 9 O'Clock News where Mel Smith tries to buy a gramophone and Rowan Atkinson tries not to sell him one.
Of course, you'll have to fiddle with the levels to make it look right, but it's pretty much an out of the box and up-and-running experience for something with a computer inside it.
The important thing then becomes how many HDMI holes it has in the back vs. the number of cables you want feeding the thing.
Which in your case is one, but I'd demand two just in case you ever decide you'd like cable TV or whatever.
The trouble with Smart TVs is that they can be pretty poorly maintained when it comes to software updates; a year or two in and they're basically abandonware. The only thing I use mine for (app-wise) is Netflix, because all my servers and things are Linux-based and can't do DRM. And the Netflix app is terrible.
If my home setup were Apple centric (and I didn't develop this sort of thing for fun and profit), the Apple TV would be all I'd get.