Only compared to the D/E built into the TV. There was no comparison there. Since I’ve never seen any other manufacturer demonstrate the commitment to the development of the technology that Zvox has, I haven’t bothered comparing elsewhere. Most just seem to include it so they can say “Yes, we have that too.”
I’m curious where you found the bad reviews, and especially WRT Samsung TVs. I can’t imagine why the brand of TV would affect things since its just a simple hookup to the audio out of the TV via either the standard 2 channel phono plugs or most commonly on current sets, fibre-optic.
BTW, the 203 is the model you should look at as that is the current “audiology” version. The 200 is just their standard offering for folks with more or less normal hearing. Take a look at the Zvox website for the rundown. I believe they offer a 30 or 60 day money back guarantee if you’re dissatisfied with the purchase.