Schiada's traditionally hold their resale value better than most any boat in their class out there. I think they're probably a better handling boat than the Vector apple for apple. I'm sure we could :argue: about that till the cows come home here too. Just my take having been around both and owning both.
Also I think the Hallett 210 is a better boat and has pretty much outshined and outperformed the Vector, thus probably depressing the Vectors percieved value. But from what I've seen even used 210's have a hard time matching comparably equipped Schiada's used values.
Having said all that I still think the Vector is a good boat and would not hesitate to own one for river / lake use or even as a second hand ski race boat. However if I was building a new ski racer my choice would not be a Vector.