The customer service is amazing! They are very responsive to requests for custom designs or suggestions. I really can't think of anything that I dislike about this product. It's easy to use, reliable, energy efficient, beautiful light output, it looks great in any environment you put it in. Nothing. I would highly recommend using Lucibel products. If you're looking for something affordable yet high quality, look no further than Lucibel. We've been able to cut back our consumption by more than 30% just because we have such an effective solution at work.