Doesn't sound very scientific to me.
> How does the audio quality compare?
Why compare with an old system from the 80s? I got to hear a friend's friend's modern audiophile setup. A dedicated room with Wilson Audio speakers (totally overpriced but amazing), high-end DAC, high-end amp... It was bliss. One of these $50K+ setup but bliss. This is nothing like a laptop, a soundbar or a Sonos.
> Or do the new multi room systems play in the same league as the old system that were used by enthusiasts?
I wouldn't be suprised they'd actually be better than these old systems. But they don't play in the same league as actual modern audiophile setups.