The reality about the physics of speakers is small speakers can only do so much. Speakers move air and to play lower frequencies you need move more air. Now, I am not talking about low bass that the subwoofer handles but bass like a man's voice, lower notes on instruments,etc. The small sound bars like the Samsung won't be able to play those frequencies well. Normally, with small speakers and sound bars I recommend to narrow your search with speakers or sound bars that have 4" drivers or larger and also have tweeters. Full range drivers do not cover the whole frequency range well. So skip the bars that don't have tweeters like the Samsung.
In your price range it is tough to find sound bars with 4" drivers. The Yamaha 105 mentioned has 3" drivers they call dual subs (laugh, choke). The 3"drivers in the Yamaha move than twice as much air as the 2" drivers in the Samsung bars. This will give a richer, fuller, more realistic sound. Another sound bar I would recommend in this price range is the Pioneer SP-SB23W, it uses 3" drivers and a tweeter plus it come with a sub for $400 but can be found for even less. The Harman Kardon SB26 also meets those specs but I haven't used it.