Dartzeel or Mark Levinson 33H

For 88 dB sensitivity speakers nominally rated at 4 ohms but dipping to 2.5 ohms, I would be careful about amplifier matching. The dart frequently is used with speakers rated several dB higher sensitivity and with higher, more benign impedances, some with powered woofers, and with such loads can perform well. Bass control, dynamics and weight are some things to listen for. In this price range there should be no compromises.

I would choose a warmer sounding amp to WB speakers. ML33H is such an amp. Also, I heard it with gryphon amps. Match made in heaven.

I was using YBA Passion Integre and AMP 400 with WB ARC and Torus and was very satisfied. YBA is J-FET amp and sweet sounding.

I would say that your Chords are better than all the rest, what you need is to buy a Chord CPA-5000 and connect your 8000 to the av input and you hear the difference.