What you have in your speaker direct bake-off, depends entirely what you have them paired with upstream.
(1) The philosophy is clear. An affordable speaker with high-end amplification and source makes more sense in audio performance, than an expensive speaker with a cheap amp and source.
(2) Short-term outlook versus Long-term challenge: Your mid-fi AVR will be significantly bested by even a modest quality-build hi-fi integrated amplifier. If you have a future amp upgrade in your budget, then the HARBETHs will be finally able to perform to their significant strengths, and I am quite confident they will prevail in my personal experiences, having owned both brands.