Best Protein Powder NZ (2026): Whey, Isolate and Blends Compared

All three are whey, filtered to different points. Concentrate is the least processed and cheapest, so it keeps a little more of the natural carbs and fat from milk. Isolate is filtered further, which strips out most of the lactose and fat and lifts the protein share per gram. A blend mixes concentrate and isolate to land between the two on both price and macros. In our range most whey powders deliver 24 to 27g of protein per scoop whichever type you pick, so the real difference is price per serve and how lean the rest of the macros are. Check the Type column above.

Sort by the $/serve column to see it plainly. The cheapest whey per serve is MusclePharm Combat 100% Whey at about $2.31 a serve for 25g of protein, with Basic Supplements Whey near $2.46 and Cellucor C4 Pro Whey around $2.50. Lean whey isolates cost more per serve, roughly $3.50 on Dymatize Iso 100 up to $5.50 on Ghost Clear Whey, for a similar 25g of protein with less lactose and fat. Big mass-gainer tubs read high per serve because a serving is two to three normal scoops.

If you are drug-tested or just want third-party certified protein, the Batch-tested column flags every product carrying an Informed Sport or Informed Choice certification. In powders that currently covers Dymatize Iso 100, MusclePharm Combat, and both Pillar Performance isolates (whey and vegan). Certification means each batch is screened against the WADA banned list, which matters for competitive athletes and is a nice-to-have for everyone else.

On a budget, a whey blend at $2.30 to $2.65 a serve gives you the most protein for your money. Want leaner macros or less lactose in the powder? An isolate carries less lactose and fat than a concentrate as a matter of filtration, so look to the Isolate rows. Dairy-free or vegan? Our plant protein range runs around 20g a serve from Ghost Vegan and Pillar Vegan Isolate. Drug-tested athlete? Start with the batch-tested rows. Match the Type and $/serve columns to whichever of those matters most to you.

Powder is far cheaper per serve. Whey powders here start near $2.31 a serve, while RTD protein drinks run roughly $5.83 to $9.00 a serve for 17 to 40g of protein. You pay the premium for grab-and-go convenience and no shaker. If cost per gram of protein is the priority, powder wins every time. If you want it cold and ready in a fridge, the RTD range is there. Our RTD vs powder breakdown runs the numbers.