Lights are really hard to buy, purely on the fact that your interest in the hobby will change. My advice has always been save your pennies, and buy the biggest baddest fixture ever. Because one day you will conquer zoas, LPS
and the likes and you'll want more, but then you end up having to spend another giant wad of cash, when you could have just paid like 100 bucks extra the first time. Patience is the hardest thing in this hobby.
Also, how can you not love SPS
They are just so...amazing..
It's a whole different ball game with completely new and different challenges.