i guess it runs in your family & friend circle.
here if you throw around terms like "lack of clarity in bass, lack of clarity in vocals, no air between the instrument separation" etc many will look at you with surprise & if you tell them Z5500D(costlier) is worse than MX5021(cheaper) then even more so.
MX5021 is cheaper??
whereas Z5500-D is costlier?
My friend please do your math.
MX5021 is not even half as powerful as Z5500-D. It's only 90W RMS ok and that too I bought for Rs. 8k-8.5k that time and Logitech is fourfold powerful than the MX5021 with 5 satellites and much powerful sub-woofer and available at 15-16k. So for twice the budget of MX5021 and this much powerful set-up with 1 beefy subwoofer and 5 satellites just for 15-16k. This is where the quality relies with MX5021.
Z5500-D called as a BOOM BOX
Name any mainstream logitech speaker which doesn't have powerful subwoofer?
Logitech Z2300, Logitech Z623, Logitech Z5500D, Logitech Z906.
From all this logitech mainstream speaker segment, I came to know about only one thing that logitech clearly aim for beefy sub-woofer in their speakers because they knows that mass-market tends to look for the heavy bass which they provide.
I have never seen any 2.1 speaker system from logitech which has 100W-120 RMS subwoofer with quality satellites.