I have tried many a protein powders in my many many years working out, but this one is by far the best. I recently got the chocolate mint flavor for myself and the vanilla ice cream flavor for my husband (since he doesn't like chocolate mint or mint anything), and have used it for about a week now. Until a week ago, I was using the Elite XT powder from Vitamin Shoppe, but I will never go back to it- Syntha-6 is really that awesome! It's got a great taste- even the vanilla flavor, and I usually don't like ANY vanilla protein powders because they give me heartburn for some reason. Not this one! The quality of this stuff is amazing, and it's really filling. I haven't tried it with water yet (I'm traumatized my using Muscle Milk with water... aka dissolved chalk in a cup, eew), so I use the unsweetened plain 40 calorie almond milk with it (Almond Breeze, I think). The flavor is really smooth, and has that ever-so-slight dairy, milkshake kind of aftertaste without actually having to use ANY milk products (except the protein, of course). I don't like milk at all, and was allergic when I was younger but I'm not anymore. I've always drank Soy and used tofu, and then in recent years since it's become more widely produced, almond and coconut milks; I can't stand the taste of cow milk- yogurt, some ice cream, and cheese is as far as my dairy consumption goes. Even still, if I have too much lactose my nose gets stuffy and all that fun stuff. My husband has become more sensitive to lactose in the last 2 or so years, too, so this protein powder is really nice for that, even though it is whey; there's no bloating, no upset stomach, and is really tolerable if you're sensitive to lactose (I actually didn't even know it was until I read the whole label yesterday, it's that good). That being said, after using it for about a week, I love it! It really does keep you absolutely stuffed until your next meal 3 hrs later. My husband agrees; with the Elite XT he would have to add extra fruit or almond/peanut butter to his protein shakes to stay fuller longer, but hasn't added anything to any of his shakes made with the Syntha-6 powder, which is amazing. It has an awesome flavor with no nasty chalk or salty aftertaste, and is really nice after a hard workout- it really does reduce your soreness and decreases recovery time. I can't say too much about fat loss benefits yet, but I imagine with how filling it is, and how well the body responds to it after a workout it would be pretty effective in helping. Only time will tell, but so far, so good! I don't think I'll ever buy another brand of protein powder, I'm an addict already. (The only reason I give it 4 stars is just because I haven't had it long enough to evaluate its benefit toward fat loss, but I'm sure it will be changing to 5 stars...