FWIW, I’ve owned many speakers in the <$6K pair price range and some above that range. Of all those speakers, the Philharmonic BMR Towers have been the best value by far, performing more like $10K/pair speakers rather than the typical $5K offerings. There’s a lot of value to be gained in speakers when the middle-man (dealer) is removed from the equation.
Consider that the typical $5K speakers are equipped with woofers worth </= $100/each. The BMR Towers have woofers that retail for $380/each. So it comes as no big surprise that the BMR Towers produce the best bass quality I’ve heard from any speaker, yup, ANY speaker, regardless of price.
Regarding amps, I’ve also owned quite a few of those over the years, both integrateds and separates. The most expensive of those was a $6800 amp and $5500 preamp.
The pieces that resulted in the best performance value are the Yamaha A-S2100
integrated, the original Parasound Halo A21 amplifier (not the A21+ which is inferior), and Benchmark LA4 preamp. For an integrated solution, the Yamaha A-S2100 is nearly impossible to beat for the asking price on the used market. Even at its original retail it qualifies as an incredible value relative to $10K worth of separates. It now anchors my system despite having owned all that pricier stuff.
Whatever route you go, don’t dismiss the importance of room treatments. Those can often times yield a greater improvement than will spending additional thousands on the gear.