Finally went for Velodyne Impact 12 and I must say that I am very satisfied with this one.
Good thing is it doesn't sound loud and rattle everything in the house. It is just perfect, with softness, deep bass and more than that the feel of it. And another Good thing is that the presence of sub is not felt separately, but completely fills the room, some times I doubt that even if the sub is working or not (so I have been checking frequently if the sub is working or not

) All together I am happy with the purchase for the price and output (24k for 4 mons old sub)
Now my family members also felt the richness of the sound and can make out from their expression that how nice they feel with the overall output of the music.
Movies watched, Spectre (trailer) and MI4 Rogue Nation, they are perfect and gives 100% movie watching exp in a theater.
I am yet to tweak the settings to see if there is a sweet spot which I am yet to discover.
*****Now I have a question.......should I use a stabilizer for the sub (I have been advised that the sub needs a stabilizer just to be safe).....any suggestions or advice???
If a stabilizer is required, can you please let me know what should I be looking for while making a purchase????