Does anyone know if there is a difference between two balls which are the same ball brand, with the same specs, but offered at different levels? For example, I have a set of Volvik Crystal (L28), at $3.50. There is the same ball at level 26 (same specs) for $3.00. Same thing with the Volvik Crystal, level 51 and level 53. Those two also have the same specs but the level 53 cost 50 cents more. Is there any difference in performance in balls like these that would cause a price difference? Thanks.