Thanks for the welcomes!
Cool article, I haven't taken my Key Tronic apart. My particular keyboard is one of their red logo "Lifetime" series, and a bit more expensive than the $15 model in that article. I wonder if the guts are the same...
Anyway, yeah it doesn't have the same weighty feel of my unicomp or Filco. But the key action just feels so good, crisp and tactile,not a hint of sponginess, and the keys bottom out in a pleasant way, with a nice soft definitive "thud". I've been using it for 3 years now, and even though it has a lifetime warranty, I still bought a backup just in case - I like it that much.