I'm with Carter. As much as I LOVE big balls I prefer more normally proportioned balls if the dick they're attached to isn't large. At some point it can just become grotesque looking if the balls are way larger than the cock.
Big loads don't necessarily come from big balls. I've known a number of guys with big balls that shoot small loads, and a lot of guys with average to small balls that shoot huge loads. The "load" doesn't come from the balls, it comes mostly from the prostate and seminal vesicles.