Okay, let's end the confusion:
I don't know what Mr. Dunipace said about the Whale being an Aviar with extra plastic, but the Whale is an Aviar top with a V-Tech bottom. Other discs, such as the VRoc, VCobra, Stud, Colt, and Wombat also have V-Tech bottoms, which is defined by having a convex lower rim and a (pretty big) bead. That convex rim and bead are what defines a disc as "V-Tech".
A Plus Mold ( + mold ), such as a Teebird+ or TL+, is where the inside of the lower rim is "relaxed", or at a less sharp angle to the top rim than the normal disc's rim. That's all it is; nothing fancier than that, just a different angle of the inside wall of the lower rim.
And a "3" series disc is one that has the bottom piece like its original namesake, but a flat top. Well, that's what it's supposed to be; the TL3 does not have that very flat top. The Roc3, Aviar3, and AviarX3 sure do, especially in Star Plastic.
V-Tech, "3" series, and Plus Molds have nothing to do with each other, and I don't know of any disc that has both V-tech and Plus Mold.