My salvation came in the form of variety. When a person is endlessly pursuing "the One," it's a good clue that they won't find it. Very likely there is an insatiable drive to hear something different, no matter how good the rig. Buying and dumping won't address the need. The need is to enjoy the variety and gear as much as the music, and there is nothing wrong with that. It's a fabulous way to enjoy the hobby.
The solution is simple; divvy up the budget to get the best components or speakers to express variety, and watch how satisfaction blossoms. Bored? Simply change some cables, a component or speakers. If one has the space and the means but is not willing to spend the money on this, then there is no justification for complaint, especially when at all price levels this diversification can happen, even with inexpensive speakers such as the A40.
For instance, something as simple as having a pair of more affordable panel speakers on hand to swap out with the main speakers can keep much of the OCD-like dissatisfaction away. Or, if on a severely restricted budget, find several garage sale or thrift store speakers and rotate them. The variety of experience is lovely, and it doesn't need to be costly.