Here's the rub, the colours are insanely vibrant and the picture flex and specks are almost non-existent, which when putting on the Warner DVD's is quite evident (and yes, bits and pieces of detail is kind of "Smoothed Over" but where the detail counts, it's there, and the vibrant colours are stunning, not looking over saturated or having any over bleed effects, with skin tones looking normal; I actually found the Blu-ray colours to fit the cartoons more than the Warner DVD's pallet).
But here's the big, "BIG", problem with this set, the sound sync is off (only milliseconds for the first episode, but the next episode, The Mechanical Monsters, part way in when Lois and Clark are talking, the sound is so far off that it sounds like Lois is talking like Clark, as her lips are moving to Clark's spoken line).
I watched 3 episodes from the first disc (on 2 different Blu-ray players to make sure that it wasn't just a player issue) and the second and third episodes (especially the second) started okay with the episode intro and a tad into the episode, but then the sync just goes WAY off (and not just slightly off, but WAY off, people seeming to say other people's lines in the other people's voices, sound effects happening WAY after the sound was made, etc.) and that was only after 3 of the 17 episodes.
It sucks Kryptonite, because if it wasn't for the sound sync issues, I'd actually prefer it to the Warner DVD's (even with the detail issues and the watermark in the lower right of the screen) because of the Blu-ray's vibrant colours, removal of the consistent print debris that plague every frame of the Warner DVD's and attempted sound enhancement which make the Warner DVD's sound flat by comparison.