I did a bid today for a current Christmas light customer who has an installed Focus lighting system. It is 3 years old, and he has never replaced a bulb, but recently 6 have went out. He is real happy with the system, and I have no experience with Focus, but the fixtures seem to be sturdy and well built, provide light without seeing the source, and further it is not in his budget to replace it, so I just agreed to rebulb all the fixtures, trim bushes around them, re set the angles etc, like we do for our yearly rebulbs. I have not used par 36 well lights in a while, and noticed they have xenon/halogen 5000 hour bulbs now, and was wandering if you guys have tried those. I know I'd rather do a mr-16 well light, but he already said no, just rebulb. any negatives? I am thinking 20 watt floods to replace the 20 watters he already has.