I switched over to black for the natural sweeteners in the flavours. I use gluten free UU as well. I’m 100% Huel four days a week at work, 1-2 shakes a day on off days. I can use one or the other for a few days in a row, I can’t say I notice a difference between the two In how I feel or function.
I do 50+ walking miles a week, that’s a bit excessive, it’s stop go with job, not a long race with intense cardio tho. I generally prefer less carbs, I think mentally that makes me feel better About black.
The main thing you may notice is the lower carb levels in black. Carbs are the primary fuel for exercise but also turn to fat if unused. So if you are looking to cut for a bit it could help support a sensible diet and exercise program. Due to carbs holding water so they can be moved around the body ready for use you may notice a whoose effect on on the scales due to lower water in muscles( which normally tricks people into thinking low carb or keto diets are a smart idea).
I think that I will give it a try and see how it goes and which I prefer. I’m furloughed for the next few weeks so probably sticking to V3 for this subscription is a good idea as I’m going to try and up my exercise whilst I’m off.