I saw some comments about sub-woofer placement which made me cringe. Typically, the best place for a sub-woofer is in a corner. Out in the open, you can be left with a standing wave issue which can muddle mid-range sounds in the various harmonic frequencies of the sub-woofer output. Standing waves are bad.
But, yes, sub-woofer sounds are felt more than they are actually heard.
The quality of sound is all dependent on the budget. If you are on a low budget, do not go to a high-end audio store, with a good theater room setup and listen to it. You do not know what you are missing if you never hear it.
And no matter how good the equipment is, if you do not properly calibrate it for the room conditions, you will never get the best sound out of it. I, and I imagine a couple of others here, could go into a rather lengthy list of things to look out for in a room when trying to get the best sound from it. But most would not even care about that.