Based on the reviews provided, both the Allmax Isoflex Pure Whey and the Promix Grass-Fed Whey Isolate are highly regarded protein powders among fitness enthusiasts and bodybuilders. They both aim to enhance workouts and build muscle, offering high protein content and fast digestion speed. However, there are some notable differences. Allmax Isoflex Pure Whey uses a hybrid-ratio ion-filtered whey protein isolate, which includes multiple forms of whey protein isolates, and has a protein enzyme blend to aid digestion. It's also very low-carb and fat-free. On the other hand, Promix Grass-Fed Whey Isolate uses a single source of protein, the Whey Protein Isolate, and includes organic cocoa and organic coconut sugar for flavoring. It has a slightly higher fat and carb content.
In terms of superiority, we lean towards the Allmax Isoflex Pure Whey. Its use of multiple forms of whey protein isolates and the inclusion of a protein enzyme blend gives it an edge in terms of protein quality and absorption. While it does contain some artificial flavors and sweeteners, its overall effectiveness and high-quality ingredients make it a worthy investment for those looking to enhance their workouts and build muscle. However, if you're looking for a more natural product and don't mind a slightly higher carb and fat content, the Promix Grass-Fed Whey Isolate is also a solid choice.