I would vote for Dry ferts as well. Definitely most bang for your buck and once you get used to dosing them they aren't anymore hassle. I find them less actually, when compared to having to frequently reorder the bottled liquid products (a couple years worth of dry ferts takes up less space than a month or two of liquid so its easy to keep extra in hand).
Don't get me wrong, ADA is a great company and has some really nice products. Their ferts will definitely grow plants, but there isn't any "magic" compound in there that will guarantee your success.