If you are already knee deep with no experience or knowledge then go with AN ph perfect or similar for a crop or two. In the mean time learn more, you could read a book like Dr.who suggests or read forums here and then make a more educated choice yourself, do both if you like. AN and so are designed for very lazy/new people who have not or can't be bothered to learn themselves (or cba even if they have). If that's you and you are ok with that then keep using it or similar by all means. If it's for personal use the very first thing you need to do is add up setup, electric and nute bill and then figure out if it's even worth growing over just buying it. You may only be able to decide that after a few crops and final weights.
A very rough heads up is that if you are only doing 1 plant and continue to use expensive nutes you need to be getting at-least 60gram to justify the time and money/investment. In the first couple grows you may get less due to inexperience, but as you get better 3+oz for 1 plant should be your absolute minimum.
Look into a 315 ceramic metal halide. For one plant this would be amazing and worth every single penny. It's the best option out there imo, don't go down the diy path as it's not set yet or newb friendly. Also stay away from cfl flowering, it is not cheap and other reasons, just don't do it ^^. A simple 400w multi spec hps will be a good second choice for both veg and flower. It will run a bit hotter than the 315 though, and has a less optimal spectrum for bud quality. But more than good enough..