I think it depends on the situation. If the eight ball somehow "gets lost" every other week and the balls often end up on the rough concrete floor over by the vending machines, then I'm going with the cheapie counterfeit balls that look just like real balls but cost under $30 delivered to your door. Oh, and don't forget the exposed nails in the pockets that somehow never get fixed.
If the balls stick around and don't get damaged, I think I'd go for the cheapest set of Aramiths that are solid phenolic.
The set in the link looks interesting. Which company makes them? Do they have manufacturing issues?