I have the Advanced Nutrients - Iguana Juice in 1 liter containers and I'm so glad I didn't purchase the larger 4 liter ones because I wont ever use it again. It's not a bad product, so don't get me wrong, but it smells so bad! I guess it's because it has rotting fish in it. . . but needless to say I will never put it in my hydro tank again.
I know a lot of people are against synthetic, but they're just purer more percise forms of the compounds the plant needs and if it gives you an all around better bud what's the problem? I'll use up the rest of the iguana juice in my outdoor, dirt grow and then switch back to the advanced nutrients - A&B program with micro, final phase and bud candy. I also have a dutch masters advanced kit; grow A&B, bloom A&B and a few of the foliar spray products.
I noticed a lot of plant strains grow differently and once you find what they like no product is really better then the other even though the companies will tell you otherwise.