BHK 300 vs Luxman m900u vs Mola Mola Kaluga


Looking for insight on sound comparisons between these three amps.  Had and liked the BHK’s, but returned them due to ongoing QA issues.  I’m concerned about the bass capability of the Luxman, and about class D sound from the Kaluga.  Have heard neither, and can’t get a demo.  Linn Akurate DSM/3 fed by nas for front end; Monitor Audio PL300ii speakers.
lldd
yyzsantabarbara: thanks for the info on the Mola Mola.  I hadn't realized they are that old - sort of new at this and learning as I go.  Your insights on the Luxman are also helpful.

rego: thanks for addressing my bass concerns with your thoughts.

I keep returning to the Luxman pair in my search, so probably time to just go ahead and order.
Check out the AGD amps if you are thinking about class d...has latest GaN (galium nitride) transistors.  They're like nothing I've heard, with  fantastic transparency and micro-detail but without being edgy, hyper detailed,  or bright.  They've been described as a solid state SET with power.  And from a practical perspective, they are small and light and super efficient.