CVD vs. universal joints

[simplechamp]

Is there any reason to use one over the other? Mainly in terms of how they wear, overall durability, and possible differences when it comes to binding at higher angles.

I notice most 1/8 buggies and truggies use CVDs but some use universal joints. I kind of prefer CVDs because they are rebuildable, whereas universal joints are not (as far as I know). Just wondering why some manufacturers use one type or the other. Maybe there isn't any reason?

And for those who say "they are the same thing", I know the terms are sometimes used interchangeably, but this is what I'm talking about:

CVD:



Universal joint: