Hi Ajith,

Here are some of the models you can pick from:

Sonos ARC Premium Smart Soundbar ( Dolby Atmos )
Sonos Beam Gen 2 Smart Soundbar ( Dolby Atmos )

You can pick and choose the model depending on your requirement. Refer Sonos Speakers Tenders for detailed specifications.

Moderator Note: Removed hyperlink. Modified in accordance with the Community Code of Conduct.

Might be easier, and more useful just to look at www.Sonos.com. 

I think will depend on the space dedicated for your TV entertainment. In my personal opinion ARC provides a supreme audio quality but in both cases you will need a SUB to add that extra bass punch for full immersive sound experience.

Take a look a this videos, Peter explains really cool