I've used Earthjuice line with great success, very good tasting organic nugs...
Also, our sponsor, Blue Planet Nutrients, has turned out many, I mean tons, of very quality grows here at 420 magazine, very affordable nutrients with plenty of people here using them to help. I personally have never used them, ingredients are almost identical to earthjuice with some minor exceptions, but they are very highly recommended!
Like it was mentioned before.... your question is kind of like asking, which car is best to drive on pavement... they all will work, and its more user preference on which one you choose, whether your goal is organic (eco friendly car) or synthetic (sports car)... all nutrients will kill plants if over applied, as well as under applied, but all nutrients can also grow very good crops... if your looking for easy... the OC+ that was recommended above is very easy and also has been growing some supreme nugs here at 420 magazine...
Let us know what you decide!