Best Bass Amp!

I’m in the process of rebuilding my pair of Kinergetics SW-900 linesource subwoofers that have six 10” drivers per side. I need input on choosing the best sounding(5hz-80hz), most powerful, hardest hitting & most important cool running(most likely Class-D)monoblock bass amplifiers. I prefer ‘always on’ or ‘auto turn on’ if possible. No built-in crossover needed since I’ll be using my Pre/Pro for that. They will be used for music(40%) & home theater(60%) to mate up to my Apogee Studio Grand & Dali Megaline speakers.

I want to stay under $2500 price new/used for the pair if possible.

My choices so far are:

Bel Canto Ref-1000

Wyred 4 Sound SX-1000

PS Audio M-700

Emerald Physics 200.2SE(in mono)

I have a Coda Continuum No. 8 Stereo Class-A amplifier I will be comparing to hear the difference with the digital amps listed above.

FYI- I’ll be replacing the stock Vifa woofers in the SW-900 with Dayton Audio Reference 10” woofers(model #RSS265HF-8).

Please help me select the best from the list above or add any other amps you can think of that would be better.

Thank you!