Just a thought based on my own experience - I tried out some pro/PA class D amps (Crown XLS2500) which have very high power and current capabilities, huge value at their price point.
Although their specifications (SINAD etc..) are not "impressive" - they are adequate, and well beyond the threshold of audibility
In any case - with my speakers... a set of used Crown XLS amps at $250 each gave me surprising (positive) results in my system and replaced much more expensive audiophile power amplifiers (Quad).
I don't know about the availability of Crown amps in your area, but I do urge you to look at the professional / PA market places - it required a bit of care, as some amps in that market have loud fans... but many don't - and as bands come and go, get founded and fail, their gear gets sold used at very reasonable prices - making it viable to experiment, purchase and try them, and then resell them easily if you are not satisfied with the results.
The process is also very educational, as you can get massive power amps (400W ++) and see what happens with your speakers, when the amp is only idling to drive them to full volume... The Crown amp technology is also used in the JBL Synthesis & Lexicon amps in more "audiophile / videophile" environments... there are quite a few other contenders in that market including Yamaha, Behringer, QMS etc... - but you will be limited by what is available locally (unless you are willing to bear shipping costs)