I have been using beamsworks lights for vivaria, and they work great for the price. You can get replacement ballasts (which is what tends to go out first) reasonably as well. My last light was a Koval, more LED's than a Beamswork at close to the same price point.
If you want to spend over $100 bucks for a light, you can. But for $70 you can get a great 48" LED: