Walls can only look good if they are given a proper coating of primer followed by a decent paint work. It is quite often because of the primer or the readying surface that is coated on the wall that screws up that perfect wall look. Paint is used to only go on top of the primer. The best way to do this was to ensure that you acquire the services of only the best paint companies for your sweet home but today the competition has driven the prices down in the market because of which even these pros have found ways to navigate around the problem of providing quality for cheapness.
Their cost cutting methods mean that your great walls can only depend on luck. However, if you really wish to ensure that the walls in your home are great and that they perfectly suit the interior decoration then do change over to the paint zoom bandwagon. Professional painters themselves are at awe at this tiny device that uses just a 650 watt motor to spray a fine mist of paint onto the readied wall surface.