Need Amp Advice from the Collective

Thank you for such complete information. Based upon your description of the A21, it sounds like the Dragon mono's have a similar sonic signature.

I’m somewhat doubtful they sound similar, because I once owned the Rogue Pharaoh which is a similar topology and it was a complete dog. I compared it to the original Parasound Halo Integrated, which sounded far more powerful despite its lower power rating. I really have yet to come across a Class D amp that controls woofers as well as a good AB amp can. I get that many subwoofers employ Class D, but I suspect that’s mostly due to cost, size and heat, not performance. 

I drive my LRS with a Cary CAD 200. 200/350 WPC 8/4 Ohms. A great combo.

Go with the Coda #16 and pay to have someone move it when needed. Save your back while enjoying all the Coda splendor!

@markmuse had a write up on the 150 v the 250, Agon spit it out, so frustrating - bottom line, the 250 is just plain superior in every way imaginable to the 150, whatever criteria you choose to compare, the 250 does it better, not even sure why they bothered with the 150

The LRS+ is a brutal load.  My brother has them and has great success using an Anthem STR which is designed to handle the LRS's low‑impedance, resistive loads.  It weighs about 60 lbs.