IMO, the weakest link in your system is not your speakers but the source. While AR makes very good components, the CDP and the preamp are IMO above average but not my cup of tea. In our recent experience with a REF 10 preamp, it displayed a pretty good mid-range but lacked to our ears high end refinement. Base was nice but overall not that special compared to other components we were repairing. BUT then again if that is the sound you are looking for, then be happy with what you have. We do not find the AR components that open sounding, they lack 3D soundstage, smaller sound presentation, and do not provide the tone of instruments to our liking.
We are not saying that they are bad, but we have found other manufacturer components better sounding to our ears that WE prefer. You may feel completely satisfied and that is what really matters.