There are several key differences between 1.5 (the version you can make yourself) and 2.0+. Some are also differences from 1.5 to 1.9. A custom-made vitamin and mineral pre-mix. This replaces several ingredients (the vitamin pill, Calcium Phosphate, Vitamin K, Choline L-Bitartrate, Calcium/Magnesium Citrate, Vitamin D3). There’s also more Magnesium. Other vitamins and minerals have also been adjusted above minimum levels to optimal levels, and optimal forms for bioavailability. Additional Potassium to comply with the new US dietary requirements. Better Magnesium source that makes is a lot easier on digestion. Protein Isolate which has significantly lower carbohydrates compared to the concentrate/isolate/hydrolyzed protein blend used in 0.7-1.9. Most flavors are only 0.56g net carbs before adding any heavy cream. Custom made flavors. Earlier versions used off-the-shelf protein powder with flavoring. Using our own makes the flavors more stable and lowers the cost. Eliminated 2 sweeteners: AceK and Stevia Mixed and packaged in a different facility. All of the flavors (except Chocolate Peanut Butter) are now completely peanut-free and safe for people with peanut allergies.