We have a pending review of the LMX which has run a little late due to test platform changes, the liquid metal cooler works, but not as well as heatpipes and at a higher price point... resulting in a price/performance ratio which makes it a hard sell;
we didn't do dBA readings yet, but CPU temp results using Core i7 inside a well ventilated case, with same high performance fan, one of the high end HSF vs the LMX:


the +0.x in the chart refers to vcore increase

for a higher price point it has to outperform cheaper products, not match them imho.