Promixx Pursuit vs. Standard: Tested for Clarity, Toughness Compared... protein shaker category payoff pending! When we shake up our protein shakes in the Promixx Pursuit compared to our old standard bottles, the difference is noticeable. Our test mixes stay perfectly clear without clumps, thanks to the ultra-smooth, BPA-free plastic that prevents residue buildup. The wide mouth makes scooping and mixing effortless, while the ergonomic grip feels secure in our hands. Unlike flimsy competitors, ours feels built to last through countless washes in the dishwasher. Our clumsy spills barely leave a mark, and the powerful threads create airtight seals even for loose powder. Though we haven’t finalized our "payoff" verdict, our hands-down favorite is the Pursuit’s unmatched convenience and durability. The payoff is clear: it’s worth upgrading.