Try all the 'free stuff' first, like placement, etc.
Maybe you do have to go speaker shopping?
The story below involves beer and an SPL meter.
My neighbor owned a set of E650's, and then going to the E875's, (the E855's bigger brother), it was a definitely a noticeable experience.
We A / B tested, after setup with my trusty R-Shack SPL meter.
Everything sounded much more detailed, in comparason.
In our subjective opinions.